Praktikum Pemograman Sains Data

1.8 PRAKTIKUM

1.8.1 Mengidentifikasi Tipe Data

Tentukan tipe data variabel berikut dalam Phyton dan R :

a = 42
b = 3.14
c = “Hello”
d = FALSE
e = [1, 2, 3]
f = {“name”: “Alice”, “age”: 25}

PERTANYAAN :

1. Identifikasi tipe data setiap variabel diatas

Variabel	Nilai	Tipe Data pada Python	Tipe Data di R
A	42	int	numeric (sebenarnya ini adalah integer akan tetapi beda bahasa beda pengenalannya, jika integer harus menambahkan “L”)
B	3.14	float	numeric
C	“Hello”	str	character
D	FALSE	bool	logical
E	[1,2,3]	list	numeric
F	{“name”:“Alice”,“age”:25}	dict	list

2. Cetak tipe data setiap variabel menggunakan type()(Phyton) dan class()(R)

## [1] "numeric"

## [1] "numeric"

## [1] "character"

## [1] "logical"

## [1] "numeric"

## [1] "list"

1.8.2 Variabel dan Manipulasi Data

buat variabel berikut dalam phyton dan R :

x = 20
y = 5
text1 = “Data”
text2 = “Science”

PERTANYAAN :

1. Perbarui nilai x dengan menambahkan 10

## [1] 30

2. Gabungkan text 1 dan text 2 ke dalam “Data Science”

## [1] "Data Science"

3. Mengubah text gabungan menjadi huruf besar

## [1] "DATA SCIENCE"

1.8.3 Operasi Aritmatika

Mengingat variabel-variabel berikut :

a = 15
b = 4

PERTANYAAN :

1. Hitung jumlah, selisih, produk, pembagian, dan modulo dari a dan b

## [1] 19

## [1] 11

## [1] 60

## [1] 3.75

## [1] 3

2. Hitung a pangkat b

## [1] 50625

3. Buat variabel baru c = a / b dan ubah menjadi integer

## [1] 3

1.8.4 Operasi String

Diberikan text berikut :

text = “Hello, Data Science!”

PERTANYAAN :

1. Ekstrak 5 karakter pertama dari text diatas

## [1] "Hello"

2. HIitung jumlah karakter dalam text

## [1] 20

3. Mengubah text menjadi huruf kecil

## [1] "hello, data science!"

1.8.5 Operator Perbandingan Dan Logika

Mengingat variabel-variabel berikut :

x = 7
y = 10

PERTANYAAN :

1. Periksa apakah x lebih besar dari y

## [1] FALSE

2. Periksa apakah x kurang dari atau sama dengan y

## [1] TRUE

3. Periksa apakah x tidak sama dengan y

## [1] TRUE

4. Evaluasi lah ekspresi ( x > 5) AND ( y < 20 )

## [1] TRUE

1.8.6 Konversi Tipe Data

Mengingat variabel-variabel berikut :

num_str = “123”
num_float = 45.67

PERTANYAAN :

1. Ubah num_str ke bilangan bulat dan tambahkan 10.

## [1] 133

2. Ubah num_float ke bilangan bulat

## [1] 45

3. Mengonversi num_flot kembali menjadi string.

## [1] "45.67"

1.9 Bonus Challenge

Buat Program Interaktif yang Meminta Pengguna untuk Memasukkan :

Nama
Usia
Kota Kelahiran

## Masukkan nama Anda:

## Masukkan usia Anda:

## Masukkan kota kelahiran Anda:

## Hello  , you are NA years old and from  .

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