A histogram is a graphical representation of a frequency distribution using bars of equal width, without gaps between them, where the area of each bar corresponds to the frequency of observations in the corresponding interval of values. The document provides instructions on how to draw a histogram from a frequency table by plotting the class intervals on the x-axis, frequencies on the y-axis, and drawing bars to connect the corresponding values. An example histogram is drawn from the sample frequency table provided.

3. What is Histogram?
A Histogram is a graphic
representation of a continuous
frequency distribution through
special kind of vertical bar charts.

4. How Histogram Looks?
HISTOGRAM
6
5
4
3
2
1
0
Category 1 Category 2 Category 3 Category 4

5. How to draw Histogram?
• Draw X and Y axis
• Mark the class intervals in X axis and
frequencies in Y axis.
• Plot the corresponding X and Y values in the
graph.
• Draw bars for each corresponding values .

6. Represent the following Frequency
table by Histogram.
Marks Number of Students
10-15 5
15-20 20
20-25 47
25-30 38
30-35 10

7. Construction
Step1:

9. HISTOGRAM
50
45
40
35
30
25
20
15
10
5
0
Number of Students
15-20 20-25 25-30 30-35 35-40
Number of Students