Pemprogram Ilmu Data

Praktikum Pemprograman Dasar

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1 Mengidentifikasi Tipe Data

Tentukan tipe data variabel berikut dalam Python dan R:

# R
a = 42
b = 3.14
c = "Hello"
d = FALSE
e = c(1, 2, 3)
f = list(name = "Alice", age = 25)

Pertanyaan:

  1. Identifikasi tipe data setiap variabel di atas.
  2. Cetak tipe data setiap variabel menggunakan type() (Python) dan class() (R).

1.1 Jawaban

a = 42  -> numeric 
b = 3.14  -> numeric 
c = Hello  -> character 
d = FALSE  -> logical 
e = 1 2 3  -> numeric 
f = name: Alice age: 25  -> list

2 Variabel dan Manipulasi Data

Buat variabel berikut dalam Python dan R :

# R
x = 20
y = 5

text1 = "Data"
text2 = "Science"

Pertanyaan:

  1. Perbarui nilai x dengan menambahkan 10.

  2. Gabungkan text1 dan text2 ke dalam “Data Science”.

  3. Mengubah teks gabungan menjadi huruf besar.

2.1 Jawaban

Nilai x setelah ditambah 10: 30 
Teks gabungan: Data Science 
Teks dalam huruf besar: DATA SCIENCE

3 Operasi Aritmatika

Diberikan variabel berikut:

# R
  a = 15
  b = 4

Pertanyaan:

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

  2. Hitunglah a pangkat b.

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

3.1 Jawaban

Jumlah: 19 
Selisih: 11 
Produk: 60 
Pembagian: 3.75 
Modulo: 3 
Pangkat: 50625 
c sebagai integer: 3

4 Operasi String

Diberikan teks berikut:

# R
  Text = "Hello, Data Science!"

Petanyaan: 1. Ekstraks 5 Karakter pertama dari teks.

  1. Hitung jumlah karakter dalam teks.

  2. Ubah teks menjadi huruf kecil.

4.1 Jawaban

5 karakter pertama: Hello 
Jumlah karakter: 20 
Teks dalam huruf kecil: hello, data science!

5 Operator Perbandingan dan Logika

Diberikan variabel-variabel berikut:

# R
  x = 7
  y = 10

Pertanyaan:

  1. Periksa apakah x lebih besar dari y

  2. Periksa apakah x kurang dari atau sama dengan y

  3. Periksa apakah x tidak sama dengan y

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

5.1 Jawaban

[1] FALSE
[1] TRUE
[1] TRUE
[1] TRUE

6 Konversi Tipe Data

Diberikan variabel-variabel berikut:

# R
  num_str = "1,2,3"
  num_float = 45.67

Petanyaan:

  1. Ubah num_str ke bilangan bulat dan tambahkan 10

  2. Ubah num_float ke bilangan bulat

  3. Konversikan num_float kembali menjadi string

6.1 Jawaban

[1] 133
[1] 45
[1] "45.67"
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