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Ans. (i) plt.xlabel()
(ii) plt.ylabel()
(iii) plt.title()
(iv) plt.savefig()
(v) plt.grid()
(vi) plt.xticks()
(vii) plt.yticks()
(viii) plt.scatter()
117. Explain the usage of visualization using bar graph and histogram. Explain the methods of matplotlib.pyplot that
can be used for plotting them.
Ans. (i) Bar graphs, often known as bar charts, are a common method for displaying categorical data. Matplotlib
method plt.bar(), can be used for plotting bar graphs which accept as input parameters a list of categories
that appear on the x-axis, and the associated counts that appear on the y-axis
(ii) Histograms are popular data visualization tools that offer a graphical depiction of a dataset's distribution.
Python includes the function plt.hist() for producing and customizing histograms.
Viva Voce Questions 347

