Data Science Mock Test 4

10%

Question 1 of 10

1. Which of the following package is used for reading JSON data?

json

jsondata

jsonlite

all of the mentioned

Question 1 of 10

Question 2 of 10

2. Which of the following function is used to read data off the webpages?

read.Line

all of the mentioned

read.Lines

read.web

Question 2 of 10

Question 3 of 10

3. Following figure represents correct sequence of steps in performing data analysis.

True

False

Question 3 of 10

Question 4 of 10

4. Which of the following package is used for tidy data?

souryr

tidyr

NumPy

all of the mentioned

Question 4 of 10

Question 5 of 10

5. Which of the following join is by default used in plyr package?

left

all of the mentioned

right

full

Question 5 of 10

Question 6 of 10

6. Data that summarize all observations in a category are called __________ data.

summarized

raw

frequency

none of the mentioned

Question 6 of 10

Question 7 of 10

7. Point out the correct statement.

head function work on string

tail function work on string

head function work on string but tail function do not

none of the mentioned

Question 7 of 10

Question 8 of 10

8. Point out the correct statement.

Primary data is original source of data

Secondary data is original source of data

Questions are obtained after data processing steps

None of the Mentioned

Question 8 of 10

Question 9 of 10

9. Raw data in the real-world is tidy and properly formatted.

False

True

Question 9 of 10

Question 10 of 10

10. Which of the following package is used for reading excel data?

all of the mentioned

xlsx

xlsc

read.sheet

Question 10 of 10