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Published on: 01/11/2019
Data Visualization Using Pyplot: Line Chart, Pie Chart and Bar Chart
Download Tamil Nadu 12th Standard Computer Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Computer Science Test
1.
Matplotlib allows you to create a
Table
Charts
Maps
Info graphics
2.
Which of the following is a collection of resources assembled to create a single unified visual display?
Info graphics
Dashboard
Graphics
Chats
3.
Which of the following is not a type of Data Visualization?
Graphs
Picture
Maps
Infographics
4.
Which kind of data encoded visually communicate a quantitative message
String
Numbers
Images
None of these
5.
Which key is used to run the module?
F6
F4
F3
F5
6.
Which is a python package used for 2D graphics?
matplotlib.pyplot
matplotlib.pip
matplotlib.numpy
matplotlib.plt
7.
What is pip?
8.
What is Dashboard?
9.
10.
List the types of Visualizations in Matplotlib.
11.
What is Data Visualization?
12.
List the buttons in matlibplot window.
13.
Write a python code to display the following plot.
14.
Write any three uses of data visualization.
15.
Write the key differences between Histogram and bar graph.
1.
(b)
Charts
2.
(b)
Dashboard
3.
(b)
Picture
4.
(b)
Numbers
5.
(d)
F5
6.
(a)
matplotlib.pyplot
7.
Matplotlib installed using pip. Pip is a management software for installing python packages.
8.
Dashboard ￫ A dashboard is a collection of resources assembled to create a single unified visual display. Data visualizations and dashboards translate complex ideas and concepts into a simple visual format. Patterns and relationships that are undetectable in text are detectable at a glance using dashboard.
9.
10.
(i) Line plot
(ii) Scatter plot
(iii) Histogram
(iv) Box plot
(v) Bar chart and
(vi) Pie chart
11.
Data Visualization is the graphical representation of information and data. The objective of Data Visualization is to communicate information visually to users.
12.
13.
Program:
For example, to plot x versus y, you can issue the command:
import matplotlib. pyplot as plt
pIt.plot([1,2,3,4], [1,4,9,16])
plt.show ( )
Output:
14.
(i) Data Visualization help users to analyze and interpret the data easily.
(ii) It makes complex data understandable and usable.
(iii) Various Charts in Data Visualization helps to show relationship in the data for one or more variables.
15.
| S.No | Histogram | Bar graph |
| i) | Histogram refers to a graphical representation; that displays data by way of bars to show the frequency of numerical data. | A bar graph is a pictorial representation of data that uses bars to compare different categories of data. |
| ii) | A histogram represents the frequency distribution of continuous variables. | Conversely, a bar graph is a diagrammatic comparison of discrete variables. |
| iii) | Histogram presents numerical data | Bar graph shows categorical data |
| iv) | Items of the histogram are numbers, which are categorised together, to represent ranges of data. | As opposed to the bar graph, items are considered as individual entities. |
| v) | A histogram, this cannot be done, as they are shown in the sequence of classes. | In the case of a bar graph, it is quite common to rearrange the blocks, from highest to lowest. |
| vi) | The width of rectangular blocks in a histogram mayor may not be same | The width of the bars in a bar graph is always same. |
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Physics
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Economics
Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
Computer Applications
Computer Science
Business Maths and Statistics
Commerce
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Maths
Chemistry
Physics
Computer Technology
History
Accountancy
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