MCQs - Python Programming Language - 1 - R Frequently Asked Questions

Online Multiple Choice Questions about Learning Python Programming. It will help the learners to get knowledge of Python not only for learning the language but also to get some practices about Statistics with reference to Python Programming.

1. We have a data frame called df, choose the correct pandas property that shows you the number of rows and columns in the data frame.

df.shape

df.dimension()

df.dimension

df.shape()

2. Why is Python such a popular language?

Limited Users

Simplified Syntax

Few Libraries

Focused Usage

3. We have a data frame called df. Which pandas property is used to check the columns’ data types?

df.describe_columns()

df.show_dtypes

df.dtypes

df.datatypes(columns_list)

4. What is a Python library?

It the main IDE.

A collection of functions and methods that allows you to perform lots of actions without writing your code.

A file that contains data.

It is collection of Python help files.

5. Which is not important when writing Python code?

Comments

White spaces

Naming

Empty lines

6. How do you print “X is large” if $X$ is greater than 28 in Python?

if X > 28: print(“Y is large”)

if X > 28: print(“X is large”)

if X < 28: print(“X is large”)

if X >=28: print(“X is large”)

7. What datatype would the following variable have main_data=read.csv("path/to/myfile.csv")

Integer

Array

Boolean

Data frame

8. What function(s) would print out the total missing data values for all columns of the data frame main_data?

main_data.dropna()

main_data.isna().sum()

[main_data.column_name].sum()

main_data.isna()

9. Suppose you have a data frame named dfWhat does the following method do to the data frame df.head(12).

Shows the first 12 columns of the data frame

Shows the first 11 rows of the data frame

Show the first 12 rows of data frame

Shows the bottom 12 rows of data frame

10. Which of the following is not a comparison operator (these return a boolean value of true or false).

11. Which command will grab the last few rows of a dataframe?

last()

tail()

cat()

end()

12. Before using pandas which code must first be run to make the library available?

import pandas as pd

import pandas library

import library pandas

import pd

13. Which data structure is [1,2,3,4].

List

Dictionary

numpy array

Ttuple

14. How can wel tell what version of python we aer currently using?

python –version

python -v

python +v

python version

15. Which data structure is {'one':1, 'two':2}.

tuple

numpy array

dictionary

list