Page 236 - AI Ver 1.0 Class 10
P. 236
Output will be:
Maths
Science 21.95%
Eng
16.59%
11.22%
20.00% 23.90%
SSt
6.34% Computers
2nd Lang
Histogram
Histogram represents the frequency of the variable at different points of time. It is used for continuous data and
the bars created show no gap in between-axis represents the bin ranges while Y-axis gives information about
frequency.
Let’s draw a histogram to represent marks out of 100 of 40 students in class.
Matplotlib uses a built-in function hist() to create a histogram. For example,
from matplotlib import pyplot as plt
import numpy as np
fig,ax = plt.subplots(1,1)
marks = np.array([19,16,28,45,37,34,13,49,42,44])
ax.hist(marks, bins = [10,20,30,40,50])
ax.set_title(“histogram of result”)
ax.set_xlabel(‘marks’)
ax.set_ylabel(‘no. of students’)
plt.show()
Output will be:
histogram of result
4.0
3.5
3.0
2.5
no. of students 2.0
1.5
1.0
0.5
0.0
10 15 20 25 30 35 40 45 50
marks
234 Touchpad Artificial Intelligence-X

