Frequency Table
How to make and solve a frequency table: 2 examples and their solutions.
Example 1
Example
Solution
Make a table like this.
Name the columns
Interval, Tally, and Frequency.
It says
use 5 intervals starting from 50-59.
So write the intervals
50-59, 60-69, 70-79, 80-89, and 90-99.
Find the values in 50-59.
There are,
56 and 52
two values.
So draw two tallies
in the Tally column.
And write 2
in the Frequency column.
While counting the values,
mark the values like this.
Find the values in 60-69.
There are,
60, 69, and 67,
three values.
So draw three tallies
in the Tally column.
And write 3
in the Frequency column.
While counting,
mark the values like this.
Find the values in 70-79.
There are,
74, 78, 77, 75, 70, 74, and 74,
seven values.
So draw seven tallies
in the Tally column.
And write 7
in the Frequency column.
Find the values in 80-89.
There are,
81, 81, 85, 84, 80, and 88,
six values.
So draw six tallies
in the Tally column.
And write 6
in the Frequency column.
The remaining values are the values in 90-99.
There are,
91 and 97,
two values.
So draw two tallies
in the Tally column.
And write 2
in the Frequency column.
So this is the frequency table
of the given data.
Example 2
Example
Solution
The values less than 80 are
in these three intervals:
50-59, 60-69, and 70-79.
So the number of these values is,
add the frequencies of these intervals,
2 + 3 + 7.
2 + 3 = 5
5 + 7 = 12
So there are 12 values
that are less than 80.