Data visualization using pyplot: line chart, pie chart and bar chart

12th Standard Computer Science — Data visualization using pyplot: line chart, pie chart and bar chart: Online Practice Test

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Which is a Python package used for 2D charts?

A.matplotlib.pyplot B.matplotlib.pip C.matplotlib.numpy D.matplotlib.plt

Identify the package manager for installing Python packages, or modules.

A.Matplotlib B.PIP C.plt.show() D.python package

Which of the following feature is used to represent data and information graphically?

A.Data List B.Data Tuple C.Classes and Objects D.Data Visualization

.......... is a collection of resources assembled to create a single unified visual display.

A.Interface B.Dashboard C.Objects D.Graphics

Which of the following module should be imported to visualize data and information in Python?

A.csv B.getopt C.mysql D.matplotlib

............ is a type of chart which displays information as a series of data points connected by straight line segments.

A.csv B.Pie chart C.Bar chart D.All the above

Read the code: import matplotlib.pyplot as plt plt.plot(3,2) plt.show() Identify the output for the above coding.

The four options show different Matplotlib output plots of the code plt.plot(3,2) with various axis ranges and plotted points., choice A

The four options show different Matplotlib output plots of the code plt.plot(3,2) with various axis ranges and plotted points., choice B

The four options show different Matplotlib output plots of the code plt.plot(3,2) with various axis ranges and plotted points., choice C

The four options show different Matplotlib output plots of the code plt.plot(3,2) with various axis ranges and plotted points., choice D

Identify the right type of chart using the following hints. Hint 1: This chart is often used to visualize a trend in data over intervals of time. Hint 2: The line in this type of chart is often drawn chronologically.

A.Line chart B.Bar chart C.Pie chart D.Scatter plot

Read the statements given below. Identify the right option from the following for pie chart. Statement A: To make a pie chart with Matplotlib, we can use the plt.pie() function. Statement B: The autopct parameter allows us to display the percentage value using the Python string formatting.

A.Statement A is correct B.Statement B is correct C.Both the statements are correct D.Both the statements are wrong

Q10

Which parameter of the plt.pie() function in Matplotlib is used to display the percentage value on each slice of a pie chart using Python string formatting?

A.percent B.autopct C.show_pct D.pct_format

Q11

In Matplotlib, if you pass only a single list of numbers to the plt.plot() command, how does the library interpret these values?

A.As a sequence of x-coordinates, with y-coordinates default to 0 B.As a sequence of y-coordinates, with automatically generated x-coordinates starting from 0 C.As alternating x and y coordinates of a single point D.As coordinates of points on a diagonal line

Q12

Which button in the Matplotlib output window allows you to return to the original view after navigating or zooming into a chart?

A.Zoom Button B.Pan Axis Button C.Home Button D.Configure Subplots Button

Q13

What is the primary difference in data representation between a Histogram and a Bar Graph?

A.A histogram represents discrete categories, while a bar graph represents continuous variables. B.A histogram represents the frequency distribution of continuous variables, while a bar graph compares discrete variables. C.A histogram always has equal spacing between the bars, while a bar graph has no gaps. D.A histogram displays categorical data, while a bar graph displays numerical data.

Q14

Which of the following commands is used to add a label specifically to the horizontal axis of a plot in Matplotlib?

A.plt.title() B.plt.ylabel() C.plt.xlabel() D.plt.legend()

Q15

How is zooming out performed using the Zoom button in the Matplotlib window?

A.By left-clicking and dragging a square B.By right-clicking and dragging a square C.By double-clicking the zoom button D.By pressing the Home button twice

Q16

What type of data visualization is characterized as a standardized way of displaying the distribution of data based on a five-number summary?

A.Scatter plot B.Box plot C.Histogram D.Line plot

Q17

Which visualization in Matplotlib represents data as a collection of individual points whose positions depend on two-dimensional values?

A.Line plot B.Histogram C.Scatter plot D.Box plot

Q18

What is the default starting value of the generated x-coordinates when only a single list of y-values is plotted using Matplotlib?

A.1 B.-1 C.0 D.The first value of the list

Q19

Which utility software or package manager is used to install the Matplotlib library in Python?

A.IDLE B.pip C.g++ D.Pyplot

Q20

Which button in the Matplotlib window toolbar allows you to change spacing options for the figure and its plot?

A.Save Figure Button B.Configure Subplots Button C.Pan Axis Button D.Home Button

Q21

Why is a Line Chart or Line Graph particularly well-suited for visualizing chronological data?

A.It is designed to show the proportion of parts out of a whole. B.It displays continuous variables with no spacing between rectangular blocks. C.It represents a trend in data over intervals of time by connecting sequential data points. D.It only displays categorical data on both the horizontal and vertical axes.

Q22

In the Matplotlib window, which button is clicked to drag the entire graph around to view different sections?

A.Zoom B.Pan Axis C.Forward D.Home

Q23

In a bar graph, how do the widths of the rectangular blocks compare to each other, and how does this contrast with a histogram?

A.Block widths in a bar graph are always equal, whereas in a histogram they may or may not be the same. B.Block widths in a bar graph may vary, whereas in a histogram they must be identical. C.Both bar graphs and histograms must have identical, fixed block widths. D.Bar graphs do not use rectangular blocks, while histograms do.

Q24

What is the primary purpose of using the plt.legend() function in a Matplotlib script with multiple lines?

A.To display the title at the top of the chart window B.To assign different colors to the plotted lines automatically C.To display a box containing labels that identify each plotted line D.To save the output figure as a separate image file

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This free online practice test covers Data visualization using pyplot: line chart, pie chart and bar chart from the 12th Standard Computer Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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