11202.WedCh05_240306

11202.WedCh05_240306

12th Grade

10 Qs

quiz-placeholder

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11202.WedCh05_240306

11202.WedCh05_240306

Assessment

Quiz

Computers

12th Grade

Practice Problem

Medium

Created by

Ys Huang

Used 42+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

賦予數值D為 ‘3.45’,使用is.character()函數後以下何者正確?

TRUE

FALSE

BOTH

NONE

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

賦予數值K為rep(c(T,T,F),2),再輸入K後以下何者正確?

TRUE TRUE TRUE FALSE FALSE FALSE

TRUE TRUE FALSE TRUE TRUE FALSE

TRUE FALSE FALSE TRUE FALSE FALSE

TRUE TRUE FALSE TRUE FALSE TRUE

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

賦予數值X為c(2:6),再輸入X後以下何者正確?

1 2 3 4 5

1 2 3 4 5 6

2 3 4 5 6

2 3 4 5 6 7

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

賦予數值F為T,使用mode()函數後以下何者正確?

為矩陣

邏輯值

為向量

為數字

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

賦予數值B為3.45,使用mode()函數後以下何者正確?

為文字

為陣列

為向量

為數字

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

賦予數值J為NA,使用mode()函數後以下何者正確?

為矩陣

為文字

邏輯值

為數字

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

賦予數值D為 ‘5.38’,使用as.numeric ()函數後以下何者正確?

變成數字

變成文字

變成矩陣

變成向量

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