Plotting Data using Matplotlib — NCERT Solutions

Open data is data that is open to the public for access and use. The chapter names Open Government Data (OGD) Platform India at data.gov.in as one source. Another website can also be used from which open data is available, but among the chapter’s content, data.gov.in is explicitly given.

A scatter plot can be used for comparison where we want to show the relationship between two variables. From the chapter, an example is discount offered versus sales made.

A box plot displays the statistical summary of a dataset.

Use the given data in a line plot and replace the day numbers with day names using xticks(). The line colour should be magenta.

import matplotlib.pyplot as plt

day = [1, 2, 3, 4, 5, 6, 7]
tickets = [2000, 2800, 3000, 2500, 2300, 2500, 1000]
labels = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']

plt.plot(day, tickets, color='magenta')
plt.xticks(day, labels)
plt.title('Tickets Sold in a Week')
plt.xlabel('Day')
plt.ylabel('Tickets sold')
plt.show()

From Figure 4.18, the median values for the five subjects are the middle lines of each boxplot. Reading the boxplot gives:

• English = 82
• Maths = 50
• Hindi = 55
• Science = 56
• Social Studies = 76

The highest values are:

• English = 95
• Maths = 95
• Hindi = 90
• Science = 94
• Social Studies = 95

The lowest values are:

• English = 60
• Maths = 33
• Hindi = 39
• Science = 48
• Social Studies = 54

The subject with two outliers is Hindi, with values 39 and 51.

The subject showing minimum variation is English.