BTVN

NHIỆM VỤ TUẦN 2

Chọn 1 hoặc 2 biến định tính và 1 biến định lượng làm biến phụ thuôc để phân tích, giải thích lý do.

1. Biến định tính

Tôi chọn biến định tính “Target” làm biến phụ thuộc. Đây là những biến mô tả được kết quả thông tin khảo sát và không thể đo lường hay đếm được, được xác định dựa trên các thông tin được khảo sát. Đây cũng là biến chịu nhiều tác động bởi nhiều biến khác như tuổi, huyết áp, nhịp tim, đường huyết.

2. Biến định lượng

Tôi chọn biến định lượng cholestoral là biến phụ thuộc. Đây là biến được đếm và đo lường dựa trên khảo sát của nhiều người, dựa vào đó ta có thể tính toán được tác động của nó lên kết quả khảo sát. Đây là biến phụ thuộc vì nó cũng được tác động bởi biến đường huyết, huyết áp.

NHIỆM VỤ TUẦN 1

Tìm một dataset có dữ liệu định tính, dữ liệu định lượng, có trên 5 biến và nhiều hơn 300 quan sát.

1. Giới thiệu

Cơn đau tim thường xảy ra khi dòng máu dẫn đến tim bị tắc nghẽn, thường là do sự tích tụ của chất béo, cholesterol và nhiều chất khác, lâu ngày tạo thành mảng bám trong động mạch. Cho tới khi mảng bám đó có thể vỡ ra và hình thành cục máu đông ngăn chặn dòng máu. Dẫn đến dòng máu bị ngăn lại xảy ra cơn đau thắt tim.

Dữ liệu được lấy từ website https://www.kaggle.com/, bao gồm 11 biến và 303 quan sát. Dữ liệu được thu thập cho người xem thấy được một người bệnh có nhiều khả năng bị tim hơn hay ít hơn.

2. Dữ liệu

Trong đó:

• ID: Mã của người bệnh

• Age : Age of the patient : tuổi

• Sex : Sex of the patient : giới tính

• cp : Chest Pain type: Các loại đau thắt ngực

  • Value 1: typical angina : đau thắt ngực điển hình

  • Value 2: atypical angina : đau thắt ngực không điển hình

  • Value 3: non-anginal pain : không đau thắt ngực

  • Value 4: asymptomatic : không có triệu chứng

• trtbps : resting blood pressure (in mm Hg) : Chỉ số huyết áp khi nghỉ ngơi

• chol : cholestoral in mg/dl fetched via BMI sensor: Cholestoral

• fbs : (fasting blood sugar >= 120 mg/dl) (1 = true; 0 = false) : Đường huyết

• rest_ecg : resting electrocardiographic results : Kết quả tâm đồ lúc nghỉ ngơi

  • Value 0: normal : Bình thường

  • Value 1: having ST-T wave abnormality (T wave inversions and/or ST elevation or depression of > 0.05 mV) : có sóng ST-T bất thường

  • Value 2: showing probable or definite left ventricular hypertrophy by Estes’ criteria : Phì đại tâm thất trái

• thalach : maximum heart rate achieved : Nhịp tim tối đa nhận được

• exng: exercise induced angina (1 = yes; 0 = no) : Đau thắt ngực khi cố gắng hết sức ( 1 = có; 0= không có)

• target : 0= less chance of heart attack 1= more chance of heart attack : Mục tiêu ( 0 = ít khả năng bị đau tim hơn; 1 = nhiều khả năng bị đau tim hơn )

library(readxl)
library(flextable)

## Warning: package 'flextable' was built under R version 4.3.1

library(data.table)

## Warning: package 'data.table' was built under R version 4.3.1

dataset <- read_excel("D:/MPNN/data/dataset1.xlsx")
flextable(dataset)

ID	Age	Sex	Cp	Trtbps	Chol	Fbs	Restecg	Thalachh	Exang	Target
1	63	M	Asymptomatic	145	233	1	Normal	150	0	More chance of heart attack
2	37	M	Non-anginal Pain	130	250	0	ST-T wave normality	187	0	More chance of heart attack
3	41	F	Atypical Angina	130	204	0	Normal	172	0	More chance of heart attack
4	56	M	Atypical Angina	120	236	0	ST-T wave normality	178	0	More chance of heart attack
5	57	F	Typical Angina	120	354	0	ST-T wave normality	163	1	More chance of heart attack
6	57	M	Typical Angina	140	192	0	ST-T wave normality	148	0	More chance of heart attack
7	56	F	Atypical Angina	140	294	0	Normal	153	0	More chance of heart attack
8	44	M	Atypical Angina	120	263	0	ST-T wave normality	173	0	More chance of heart attack
9	52	M	Non-anginal Pain	172	199	1	ST-T wave normality	162	0	More chance of heart attack
10	57	M	Non-anginal Pain	150	168	0	ST-T wave normality	174	0	More chance of heart attack
11	54	M	Typical Angina	140	239	0	ST-T wave normality	160	0	More chance of heart attack
12	48	F	Non-anginal Pain	130	275	0	ST-T wave normality	139	0	More chance of heart attack
13	49	M	Atypical Angina	130	266	0	ST-T wave normality	171	0	More chance of heart attack
14	64	M	Asymptomatic	110	211	0	Normal	144	1	More chance of heart attack
15	58	F	Asymptomatic	150	283	1	Normal	162	0	More chance of heart attack
16	50	F	Non-anginal Pain	120	219	0	ST-T wave normality	158	0	More chance of heart attack
17	58	F	Non-anginal Pain	120	340	0	ST-T wave normality	172	0	More chance of heart attack
18	66	F	Asymptomatic	150	226	0	ST-T wave normality	114	0	More chance of heart attack
19	43	M	Typical Angina	150	247	0	ST-T wave normality	171	0	More chance of heart attack
20	69	F	Asymptomatic	140	239	0	ST-T wave normality	151	0	More chance of heart attack
21	59	M	Typical Angina	135	234	0	ST-T wave normality	161	0	More chance of heart attack
22	44	M	Non-anginal Pain	130	233	0	ST-T wave normality	179	1	More chance of heart attack
23	42	M	Typical Angina	140	226	0	ST-T wave normality	178	0	More chance of heart attack
24	61	M	Non-anginal Pain	150	243	1	ST-T wave normality	137	1	More chance of heart attack
25	40	M	Asymptomatic	140	199	0	ST-T wave normality	178	1	More chance of heart attack
26	71	F	Atypical Angina	160	302	0	ST-T wave normality	162	0	More chance of heart attack
27	59	M	Non-anginal Pain	150	212	1	ST-T wave normality	157	0	More chance of heart attack
28	51	M	Non-anginal Pain	110	175	0	ST-T wave normality	123	0	More chance of heart attack
29	65	F	Non-anginal Pain	140	417	1	Normal	157	0	More chance of heart attack
30	53	M	Non-anginal Pain	130	197	1	Normal	152	0	More chance of heart attack
31	41	F	Atypical Angina	105	198	0	ST-T wave normality	168	0	More chance of heart attack
32	65	M	Typical Angina	120	177	0	ST-T wave normality	140	0	More chance of heart attack
33	44	M	Atypical Angina	130	219	0	Normal	188	0	More chance of heart attack
34	54	M	Non-anginal Pain	125	273	0	Normal	152	0	More chance of heart attack
35	51	M	Asymptomatic	125	213	0	Normal	125	1	More chance of heart attack
36	46	F	Non-anginal Pain	142	177	0	Normal	160	1	More chance of heart attack
37	54	F	Non-anginal Pain	135	304	1	ST-T wave normality	170	0	More chance of heart attack
38	54	M	Non-anginal Pain	150	232	0	Normal	165	0	More chance of heart attack
39	65	F	Non-anginal Pain	155	269	0	ST-T wave normality	148	0	More chance of heart attack
40	65	F	Non-anginal Pain	160	360	0	Normal	151	0	More chance of heart attack
41	51	F	Non-anginal Pain	140	308	0	Normal	142	0	More chance of heart attack
42	48	M	Atypical Angina	130	245	0	Normal	180	0	More chance of heart attack
43	45	M	Typical Angina	104	208	0	Normal	148	1	More chance of heart attack
44	53	F	Typical Angina	130	264	0	Normal	143	0	More chance of heart attack
45	39	M	Non-anginal Pain	140	321	0	Normal	182	0	More chance of heart attack
46	52	M	Atypical Angina	120	325	0	ST-T wave normality	172	0	More chance of heart attack
47	44	M	Non-anginal Pain	140	235	0	Normal	180	0	More chance of heart attack
48	47	M	Non-anginal Pain	138	257	0	Normal	156	0	More chance of heart attack
49	53	F	Non-anginal Pain	128	216	0	Normal	115	0	More chance of heart attack
50	53	F	Typical Angina	138	234	0	Normal	160	0	More chance of heart attack
51	51	F	Non-anginal Pain	130	256	0	Normal	149	0	More chance of heart attack
52	66	M	Typical Angina	120	302	0	Normal	151	0	More chance of heart attack
53	62	M	Non-anginal Pain	130	231	0	ST-T wave normality	146	0	More chance of heart attack
54	44	F	Non-anginal Pain	108	141	0	ST-T wave normality	175	0	More chance of heart attack
55	63	F	Non-anginal Pain	135	252	0	Normal	172	0	More chance of heart attack
56	52	M	Atypical Angina	134	201	0	ST-T wave normality	158	0	More chance of heart attack
57	48	M	Typical Angina	122	222	0	Normal	186	0	More chance of heart attack
58	45	M	Typical Angina	115	260	0	Normal	185	0	More chance of heart attack
59	34	M	Asymptomatic	118	182	0	Normal	174	0	More chance of heart attack
60	57	F	Typical Angina	128	303	0	Normal	159	0	More chance of heart attack
61	71	F	Non-anginal Pain	110	265	1	Normal	130	0	More chance of heart attack
62	54	M	Atypical Angina	108	309	0	ST-T wave normality	156	0	More chance of heart attack
63	52	M	Asymptomatic	118	186	0	Normal	190	0	More chance of heart attack
64	41	M	Atypical Angina	135	203	0	ST-T wave normality	132	0	More chance of heart attack
65	58	M	Non-anginal Pain	140	211	1	Normal	165	0	More chance of heart attack
66	35	F	Typical Angina	138	183	0	ST-T wave normality	182	0	More chance of heart attack
67	51	M	Non-anginal Pain	100	222	0	ST-T wave normality	143	1	More chance of heart attack
68	45	F	Atypical Angina	130	234	0	Normal	175	0	More chance of heart attack
69	44	M	Atypical Angina	120	220	0	ST-T wave normality	170	0	More chance of heart attack
70	62	F	Typical Angina	124	209	0	ST-T wave normality	163	0	More chance of heart attack
71	54	M	Non-anginal Pain	120	258	0	Normal	147	0	More chance of heart attack
72	51	M	Non-anginal Pain	94	227	0	ST-T wave normality	154	1	More chance of heart attack
73	29	M	Atypical Angina	130	204	0	Normal	202	0	More chance of heart attack
74	51	M	Typical Angina	140	261	0	Normal	186	1	More chance of heart attack
75	43	F	Non-anginal Pain	122	213	0	ST-T wave normality	165	0	More chance of heart attack
76	55	F	Atypical Angina	135	250	0	Normal	161	0	More chance of heart attack
77	51	M	Non-anginal Pain	125	245	1	Normal	166	0	More chance of heart attack
78	59	M	Atypical Angina	140	221	0	ST-T wave normality	164	1	More chance of heart attack
79	52	M	Atypical Angina	128	205	1	ST-T wave normality	184	0	More chance of heart attack
80	58	M	Non-anginal Pain	105	240	0	Normal	154	1	More chance of heart attack
81	41	M	Non-anginal Pain	112	250	0	ST-T wave normality	179	0	More chance of heart attack
82	45	M	Atypical Angina	128	308	0	Normal	170	0	More chance of heart attack
83	60	F	Non-anginal Pain	102	318	0	ST-T wave normality	160	0	More chance of heart attack
84	52	M	Asymptomatic	152	298	1	ST-T wave normality	178	0	More chance of heart attack
85	42	F	Typical Angina	102	265	0	Normal	122	0	More chance of heart attack
86	67	F	Non-anginal Pain	115	564	0	Normal	160	0	More chance of heart attack
87	68	M	Non-anginal Pain	118	277	0	ST-T wave normality	151	0	More chance of heart attack
88	46	M	Atypical Angina	101	197	1	ST-T wave normality	156	0	More chance of heart attack
89	54	F	Non-anginal Pain	110	214	0	ST-T wave normality	158	0	More chance of heart attack
90	58	F	Typical Angina	100	248	0	Normal	122	0	More chance of heart attack
91	48	M	Non-anginal Pain	124	255	1	ST-T wave normality	175	0	More chance of heart attack
92	57	M	Typical Angina	132	207	0	ST-T wave normality	168	1	More chance of heart attack
93	52	M	Non-anginal Pain	138	223	0	ST-T wave normality	169	0	More chance of heart attack
94	54	F	Atypical Angina	132	288	1	Normal	159	1	More chance of heart attack
95	45	F	Atypical Angina	112	160	0	ST-T wave normality	138	0	More chance of heart attack
96	53	M	Typical Angina	142	226	0	Normal	111	1	More chance of heart attack
97	62	F	Typical Angina	140	394	0	Normal	157	0	More chance of heart attack
98	52	M	Typical Angina	108	233	1	ST-T wave normality	147	0	More chance of heart attack
99	43	M	Non-anginal Pain	130	315	0	ST-T wave normality	162	0	More chance of heart attack
100	53	M	Non-anginal Pain	130	246	1	Normal	173	0	More chance of heart attack
101	42	M	Asymptomatic	148	244	0	Normal	178	0	More chance of heart attack
102	59	M	Asymptomatic	178	270	0	Normal	145	0	More chance of heart attack
103	63	F	Atypical Angina	140	195	0	ST-T wave normality	179	0	More chance of heart attack
104	42	M	Non-anginal Pain	120	240	1	ST-T wave normality	194	0	More chance of heart attack
105	50	M	Non-anginal Pain	129	196	0	ST-T wave normality	163	0	More chance of heart attack
106	68	F	Non-anginal Pain	120	211	0	Normal	115	0	More chance of heart attack
107	69	M	Asymptomatic	160	234	1	Normal	131	0	More chance of heart attack
108	45	F	Typical Angina	138	236	0	Normal	152	1	More chance of heart attack
109	50	F	Atypical Angina	120	244	0	ST-T wave normality	162	0	More chance of heart attack
110	50	F	Typical Angina	110	254	0	Normal	159	0	More chance of heart attack
111	64	F	Typical Angina	180	325	0	ST-T wave normality	154	1	More chance of heart attack
112	57	M	Non-anginal Pain	150	126	1	ST-T wave normality	173	0	More chance of heart attack
113	64	F	Non-anginal Pain	140	313	0	ST-T wave normality	133	0	More chance of heart attack
114	43	M	Typical Angina	110	211	0	ST-T wave normality	161	0	More chance of heart attack
115	55	M	Atypical Angina	130	262	0	ST-T wave normality	155	0	More chance of heart attack
116	37	F	Non-anginal Pain	120	215	0	ST-T wave normality	170	0	More chance of heart attack
117	41	M	Non-anginal Pain	130	214	0	Normal	168	0	More chance of heart attack
118	56	M	Asymptomatic	120	193	0	Normal	162	0	More chance of heart attack
119	46	F	Atypical Angina	105	204	0	ST-T wave normality	172	0	More chance of heart attack
120	46	F	Typical Angina	138	243	0	Normal	152	1	More chance of heart attack
121	64	F	Typical Angina	130	303	0	ST-T wave normality	122	0	More chance of heart attack
122	59	M	Typical Angina	138	271	0	Normal	182	0	More chance of heart attack
123	41	F	Non-anginal Pain	112	268	0	Normal	172	1	More chance of heart attack
124	54	F	Non-anginal Pain	108	267	0	Normal	167	0	More chance of heart attack
125	39	F	Non-anginal Pain	94	199	0	ST-T wave normality	179	0	More chance of heart attack
126	34	F	Atypical Angina	118	210	0	ST-T wave normality	192	0	More chance of heart attack
127	47	M	Typical Angina	112	204	0	ST-T wave normality	143	0	More chance of heart attack
128	67	F	Non-anginal Pain	152	277	0	ST-T wave normality	172	0	More chance of heart attack
129	52	F	Non-anginal Pain	136	196	0	Normal	169	0	More chance of heart attack
130	74	F	Atypical Angina	120	269	0	Normal	121	1	More chance of heart attack
131	54	F	Non-anginal Pain	160	201	0	ST-T wave normality	163	0	More chance of heart attack
132	49	F	Atypical Angina	134	271	0	ST-T wave normality	162	0	More chance of heart attack
133	42	M	Atypical Angina	120	295	0	ST-T wave normality	162	0	More chance of heart attack
134	41	M	Atypical Angina	110	235	0	ST-T wave normality	153	0	More chance of heart attack
135	41	F	Atypical Angina	126	306	0	ST-T wave normality	163	0	More chance of heart attack
136	49	F	Typical Angina	130	269	0	ST-T wave normality	163	0	More chance of heart attack
137	60	F	Non-anginal Pain	120	178	1	ST-T wave normality	96	0	More chance of heart attack
138	62	M	Atypical Angina	128	208	1	Normal	140	0	More chance of heart attack
139	57	M	Typical Angina	110	201	0	ST-T wave normality	126	1	More chance of heart attack
140	64	M	Typical Angina	128	263	0	ST-T wave normality	105	1	More chance of heart attack
141	51	F	Non-anginal Pain	120	295	0	Normal	157	0	More chance of heart attack
142	43	M	Typical Angina	115	303	0	ST-T wave normality	181	0	More chance of heart attack
143	42	F	Non-anginal Pain	120	209	0	ST-T wave normality	173	0	More chance of heart attack
144	67	F	Typical Angina	106	223	0	ST-T wave normality	142	0	More chance of heart attack
145	76	F	Non-anginal Pain	140	197	0	Left ventricular hypertrophy	116	0	More chance of heart attack
146	70	M	Atypical Angina	156	245	0	Normal	143	0	More chance of heart attack
147	44	F	Non-anginal Pain	118	242	0	ST-T wave normality	149	0	More chance of heart attack
148	60	F	Asymptomatic	150	240	0	ST-T wave normality	171	0	More chance of heart attack
149	44	M	Non-anginal Pain	120	226	0	ST-T wave normality	169	0	More chance of heart attack
150	42	M	Non-anginal Pain	130	180	0	ST-T wave normality	150	0	More chance of heart attack
151	66	M	Typical Angina	160	228	0	Normal	138	0	More chance of heart attack
152	71	F	Typical Angina	112	149	0	ST-T wave normality	125	0	More chance of heart attack
153	64	M	Asymptomatic	170	227	0	Normal	155	0	More chance of heart attack
154	66	F	Non-anginal Pain	146	278	0	Normal	152	0	More chance of heart attack
155	39	F	Non-anginal Pain	138	220	0	ST-T wave normality	152	0	More chance of heart attack
156	58	F	Typical Angina	130	197	0	ST-T wave normality	131	0	More chance of heart attack
157	47	M	Non-anginal Pain	130	253	0	ST-T wave normality	179	0	More chance of heart attack
158	35	M	Atypical Angina	122	192	0	ST-T wave normality	174	0	More chance of heart attack
159	58	M	Atypical Angina	125	220	0	ST-T wave normality	144	0	More chance of heart attack
160	56	M	Atypical Angina	130	221	0	Normal	163	0	More chance of heart attack
161	56	M	Atypical Angina	120	240	0	ST-T wave normality	169	0	More chance of heart attack
162	55	F	Atypical Angina	132	342	0	ST-T wave normality	166	0	More chance of heart attack
163	41	M	Atypical Angina	120	157	0	ST-T wave normality	182	0	More chance of heart attack
164	38	M	Non-anginal Pain	138	175	0	ST-T wave normality	173	0	More chance of heart attack
165	38	M	Non-anginal Pain	138	175	0	ST-T wave normality	173	0	More chance of heart attack
166	67	M	Typical Angina	160	286	0	Normal	108	1	Less chance of heart attack
167	67	M	Typical Angina	120	229	0	Normal	129	1	Less chance of heart attack
168	62	F	Typical Angina	140	268	0	Normal	160	0	Less chance of heart attack
169	63	M	Typical Angina	130	254	0	Normal	147	0	Less chance of heart attack
170	53	M	Typical Angina	140	203	1	Normal	155	1	Less chance of heart attack
171	56	M	Non-anginal Pain	130	256	1	Normal	142	1	Less chance of heart attack
172	48	M	Atypical Angina	110	229	0	ST-T wave normality	168	0	Less chance of heart attack
173	58	M	Atypical Angina	120	284	0	Normal	160	0	Less chance of heart attack
174	58	M	Non-anginal Pain	132	224	0	Normal	173	0	Less chance of heart attack
175	60	M	Typical Angina	130	206	0	Normal	132	1	Less chance of heart attack
176	40	M	Typical Angina	110	167	0	Normal	114	1	Less chance of heart attack
177	60	M	Typical Angina	117	230	1	ST-T wave normality	160	1	Less chance of heart attack
178	64	M	Non-anginal Pain	140	335	0	ST-T wave normality	158	0	Less chance of heart attack
179	43	M	Typical Angina	120	177	0	Normal	120	1	Less chance of heart attack
180	57	M	Typical Angina	150	276	0	Normal	112	1	Less chance of heart attack
181	55	M	Typical Angina	132	353	0	ST-T wave normality	132	1	Less chance of heart attack
182	65	F	Typical Angina	150	225	0	Normal	114	0	Less chance of heart attack
183	61	F	Typical Angina	130	330	0	Normal	169	0	Less chance of heart attack
184	58	M	Non-anginal Pain	112	230	0	Normal	165	0	Less chance of heart attack
185	50	M	Typical Angina	150	243	0	Normal	128	0	Less chance of heart attack
186	44	M	Typical Angina	112	290	0	Normal	153	0	Less chance of heart attack
187	60	M	Typical Angina	130	253	0	ST-T wave normality	144	1	Less chance of heart attack
188	54	M	Typical Angina	124	266	0	Normal	109	1	Less chance of heart attack
189	50	M	Non-anginal Pain	140	233	0	ST-T wave normality	163	0	Less chance of heart attack
190	41	M	Typical Angina	110	172	0	Normal	158	0	Less chance of heart attack
191	51	F	Typical Angina	130	305	0	ST-T wave normality	142	1	Less chance of heart attack
192	58	M	Typical Angina	128	216	0	Normal	131	1	Less chance of heart attack
193	54	M	Typical Angina	120	188	0	ST-T wave normality	113	0	Less chance of heart attack
194	60	M	Typical Angina	145	282	0	Normal	142	1	Less chance of heart attack
195	60	M	Non-anginal Pain	140	185	0	Normal	155	0	Less chance of heart attack
196	59	M	Typical Angina	170	326	0	Normal	140	1	Less chance of heart attack
197	46	M	Non-anginal Pain	150	231	0	ST-T wave normality	147	0	Less chance of heart attack
198	67	M	Typical Angina	125	254	1	ST-T wave normality	163	0	Less chance of heart attack
199	62	M	Typical Angina	120	267	0	ST-T wave normality	99	1	Less chance of heart attack
200	65	M	Typical Angina	110	248	0	Normal	158	0	Less chance of heart attack
201	44	M	Typical Angina	110	197	0	Normal	177	0	Less chance of heart attack
202	60	M	Typical Angina	125	258	0	Normal	141	1	Less chance of heart attack
203	58	M	Typical Angina	150	270	0	Normal	111	1	Less chance of heart attack
204	68	M	Non-anginal Pain	180	274	1	Normal	150	1	Less chance of heart attack
205	62	M	Typical Angina	160	164	0	Normal	145	0	Less chance of heart attack
206	52	M	Typical Angina	128	255	0	ST-T wave normality	161	1	Less chance of heart attack
207	59	M	Typical Angina	110	239	0	Normal	142	1	Less chance of heart attack
208	60	F	Typical Angina	150	258	0	Normal	157	0	Less chance of heart attack
209	49	M	Non-anginal Pain	120	188	0	ST-T wave normality	139	0	Less chance of heart attack
210	59	M	Typical Angina	140	177	0	ST-T wave normality	162	1	Less chance of heart attack
211	57	M	Non-anginal Pain	128	229	0	Normal	150	0	Less chance of heart attack
212	61	M	Typical Angina	120	260	0	ST-T wave normality	140	1	Less chance of heart attack
213	39	M	Typical Angina	118	219	0	ST-T wave normality	140	0	Less chance of heart attack
214	61	F	Typical Angina	145	307	0	Normal	146	1	Less chance of heart attack
215	56	M	Typical Angina	125	249	1	Normal	144	1	Less chance of heart attack
216	43	F	Typical Angina	132	341	1	Normal	136	1	Less chance of heart attack
217	62	F	Non-anginal Pain	130	263	0	ST-T wave normality	97	0	Less chance of heart attack
218	63	M	Typical Angina	130	330	1	Normal	132	1	Less chance of heart attack
219	65	M	Typical Angina	135	254	0	Normal	127	0	Less chance of heart attack
220	48	M	Typical Angina	130	256	1	Normal	150	1	Less chance of heart attack
221	63	F	Typical Angina	150	407	0	Normal	154	0	Less chance of heart attack
222	55	M	Typical Angina	140	217	0	ST-T wave normality	111	1	Less chance of heart attack
223	65	M	Asymptomatic	138	282	1	Normal	174	0	Less chance of heart attack
224	56	F	Typical Angina	200	288	1	Normal	133	1	Less chance of heart attack
225	54	M	Typical Angina	110	239	0	ST-T wave normality	126	1	Less chance of heart attack
226	70	M	Typical Angina	145	174	0	ST-T wave normality	125	1	Less chance of heart attack
227	62	M	Atypical Angina	120	281	0	Normal	103	0	Less chance of heart attack
228	35	M	Typical Angina	120	198	0	ST-T wave normality	130	1	Less chance of heart attack
229	59	M	Asymptomatic	170	288	0	Normal	159	0	Less chance of heart attack
230	64	M	Non-anginal Pain	125	309	0	ST-T wave normality	131	1	Less chance of heart attack
231	47	M	Non-anginal Pain	108	243	0	ST-T wave normality	152	0	Less chance of heart attack
232	57	M	Typical Angina	165	289	1	Normal	124	0	Less chance of heart attack
233	55	M	Typical Angina	160	289	0	Normal	145	1	Less chance of heart attack
234	64	M	Typical Angina	120	246	0	Normal	96	1	Less chance of heart attack
235	70	M	Typical Angina	130	322	0	Normal	109	0	Less chance of heart attack
236	51	M	Typical Angina	140	299	0	ST-T wave normality	173	1	Less chance of heart attack
237	58	M	Typical Angina	125	300	0	Normal	171	0	Less chance of heart attack
238	60	M	Typical Angina	140	293	0	Normal	170	0	Less chance of heart attack
239	77	M	Typical Angina	125	304	0	Normal	162	1	Less chance of heart attack
240	35	M	Typical Angina	126	282	0	Normal	156	1	Less chance of heart attack
241	70	M	Non-anginal Pain	160	269	0	ST-T wave normality	112	1	Less chance of heart attack
242	59	F	Typical Angina	174	249	0	ST-T wave normality	143	1	Less chance of heart attack
243	64	M	Typical Angina	145	212	0	Normal	132	0	Less chance of heart attack
244	57	M	Typical Angina	152	274	0	ST-T wave normality	88	1	Less chance of heart attack
245	56	M	Typical Angina	132	184	0	Normal	105	1	Less chance of heart attack
246	48	M	Typical Angina	124	274	0	Normal	166	0	Less chance of heart attack
247	56	F	Typical Angina	134	409	0	Normal	150	1	Less chance of heart attack
248	66	M	Atypical Angina	160	246	0	ST-T wave normality	120	1	Less chance of heart attack
249	54	M	Atypical Angina	192	283	0	Normal	195	0	Less chance of heart attack
250	69	M	Non-anginal Pain	140	254	0	Normal	146	0	Less chance of heart attack
251	51	M	Typical Angina	140	298	0	ST-T wave normality	122	1	Less chance of heart attack
252	43	M	Typical Angina	132	247	1	Normal	143	1	Less chance of heart attack
253	62	F	Typical Angina	138	294	1	ST-T wave normality	106	0	Less chance of heart attack
254	67	M	Typical Angina	100	299	0	Normal	125	1	Less chance of heart attack
255	59	M	Asymptomatic	160	273	0	Normal	125	0	Less chance of heart attack
256	45	M	Typical Angina	142	309	0	Normal	147	1	Less chance of heart attack
257	58	M	Typical Angina	128	259	0	Normal	130	1	Less chance of heart attack
258	50	M	Typical Angina	144	200	0	Normal	126	1	Less chance of heart attack
259	62	F	Typical Angina	150	244	0	ST-T wave normality	154	1	Less chance of heart attack
260	38	M	Asymptomatic	120	231	0	ST-T wave normality	182	1	Less chance of heart attack
261	66	F	Typical Angina	178	228	1	ST-T wave normality	165	1	Less chance of heart attack
262	52	M	Typical Angina	112	230	0	ST-T wave normality	160	0	Less chance of heart attack
263	53	M	Typical Angina	123	282	0	ST-T wave normality	95	1	Less chance of heart attack
264	63	F	Typical Angina	108	269	0	ST-T wave normality	169	1	Less chance of heart attack
265	54	M	Typical Angina	110	206	0	Normal	108	1	Less chance of heart attack
266	66	M	Typical Angina	112	212	0	Normal	132	1	Less chance of heart attack
267	55	F	Typical Angina	180	327	0	Left ventricular hypertrophy	117	1	Less chance of heart attack
268	49	M	Non-anginal Pain	118	149	0	Normal	126	0	Less chance of heart attack
269	54	M	Typical Angina	122	286	0	Normal	116	1	Less chance of heart attack
270	56	M	Typical Angina	130	283	1	Normal	103	1	Less chance of heart attack
271	46	M	Typical Angina	120	249	0	Normal	144	0	Less chance of heart attack
272	61	M	Asymptomatic	134	234	0	ST-T wave normality	145	0	Less chance of heart attack
273	67	M	Typical Angina	120	237	0	ST-T wave normality	71	0	Less chance of heart attack
274	58	M	Typical Angina	100	234	0	ST-T wave normality	156	0	Less chance of heart attack
275	47	M	Typical Angina	110	275	0	Normal	118	1	Less chance of heart attack
276	52	M	Typical Angina	125	212	0	ST-T wave normality	168	0	Less chance of heart attack
277	58	M	Typical Angina	146	218	0	ST-T wave normality	105	0	Less chance of heart attack
278	57	M	Atypical Angina	124	261	0	ST-T wave normality	141	0	Less chance of heart attack
279	58	F	Atypical Angina	136	319	1	Normal	152	0	Less chance of heart attack
280	61	M	Typical Angina	138	166	0	Normal	125	1	Less chance of heart attack
281	42	M	Typical Angina	136	315	0	ST-T wave normality	125	1	Less chance of heart attack
282	52	M	Typical Angina	128	204	1	ST-T wave normality	156	1	Less chance of heart attack
283	59	M	Non-anginal Pain	126	218	1	ST-T wave normality	134	0	Less chance of heart attack
284	40	M	Typical Angina	152	223	0	ST-T wave normality	181	0	Less chance of heart attack
285	61	M	Typical Angina	140	207	0	Normal	138	1	Less chance of heart attack
286	46	M	Typical Angina	140	311	0	ST-T wave normality	120	1	Less chance of heart attack
287	59	M	Asymptomatic	134	204	0	ST-T wave normality	162	0	Less chance of heart attack
288	57	M	Atypical Angina	154	232	0	Normal	164	0	Less chance of heart attack
289	57	M	Typical Angina	110	335	0	ST-T wave normality	143	1	Less chance of heart attack
290	55	F	Typical Angina	128	205	0	Left ventricular hypertrophy	130	1	Less chance of heart attack
291	61	M	Typical Angina	148	203	0	ST-T wave normality	161	0	Less chance of heart attack
292	58	M	Typical Angina	114	318	0	Left ventricular hypertrophy	140	0	Less chance of heart attack
293	58	F	Typical Angina	170	225	1	Normal	146	1	Less chance of heart attack
294	67	M	Non-anginal Pain	152	212	0	Normal	150	0	Less chance of heart attack
295	44	M	Typical Angina	120	169	0	ST-T wave normality	144	1	Less chance of heart attack
296	63	M	Typical Angina	140	187	0	Normal	144	1	Less chance of heart attack
297	63	F	Typical Angina	124	197	0	ST-T wave normality	136	1	Less chance of heart attack
298	59	M	Typical Angina	164	176	1	Normal	90	0	Less chance of heart attack
299	57	F	Typical Angina	140	241	0	ST-T wave normality	123	1	Less chance of heart attack
300	45	M	Asymptomatic	110	264	0	ST-T wave normality	132	0	Less chance of heart attack
301	68	M	Typical Angina	144	193	1	ST-T wave normality	141	0	Less chance of heart attack
302	57	M	Typical Angina	130	131	0	ST-T wave normality	115	1	Less chance of heart attack
303	57	F	Atypical Angina	130	236	0	Normal	174	0	Less chance of heart attack

summary(dataset)

##        ID             Age            Sex                 Cp           
##  Min.   :  1.0   Min.   :29.00   Length:303         Length:303        
##  1st Qu.: 76.5   1st Qu.:47.50   Class :character   Class :character  
##  Median :152.0   Median :55.00   Mode  :character   Mode  :character  
##  Mean   :152.0   Mean   :54.37                                        
##  3rd Qu.:227.5   3rd Qu.:61.00                                        
##  Max.   :303.0   Max.   :77.00                                        
##      Trtbps           Chol            Fbs           Restecg         
##  Min.   : 94.0   Min.   :126.0   Min.   :0.0000   Length:303        
##  1st Qu.:120.0   1st Qu.:211.0   1st Qu.:0.0000   Class :character  
##  Median :130.0   Median :240.0   Median :0.0000   Mode  :character  
##  Mean   :131.6   Mean   :246.3   Mean   :0.1485                     
##  3rd Qu.:140.0   3rd Qu.:274.5   3rd Qu.:0.0000                     
##  Max.   :200.0   Max.   :564.0   Max.   :1.0000                     
##     Thalachh         Exang           Target         
##  Min.   : 71.0   Min.   :0.0000   Length:303        
##  1st Qu.:133.5   1st Qu.:0.0000   Class :character  
##  Median :153.0   Median :0.0000   Mode  :character  
##  Mean   :149.6   Mean   :0.3267                     
##  3rd Qu.:166.0   3rd Qu.:1.0000                     
##  Max.   :202.0   Max.   :1.0000

# Đồ thị biến Target
## 0= less chance of heart attack
## 1= more chance of heart attack
library(ggplot2)

## Warning: package 'ggplot2' was built under R version 4.3.1

ggplot(data=dataset)+geom_bar(mapping = aes(x=Target, fill=Target))

Nhìn vào đồ thị có thể thấy tỷ lệ chênh lệch giữa “ít khả năng bị đau tim hơn” và “nhiều khả năng bị đau tim hơn”. Có thể thấy rằng người bệnh có nhiều khae năng dẫn đến cơn đau tim là nhiều hơn.