Question

Consider the following partially completed frequency table:

Class xi fi Relative fi Fi Relative Fi
[129; 134) 2
[134; 139) 7 *
[139; 144) 10
[144; 149) 8
[149; 154) 3


Determine the missing value indicated by the “*”.

7


9


19


17

Answer 1

The missing value indicated by the "*" is 9.

This can be calculated by taking the sum of the frequencies that have already been calculated (2+7+10+8+3 = 30) and subtracting it from the total number of data points. In this case, the total number of data points is 39 (all data points fall within the 5 intervals given), so 39-30=9.