Mathematics

Find the actual lower class limits, upper class limits and the mid-values of the classes :
10-19, 20-29, 30-39 and 40-49.

34 Likes

In case of frequency 10-19 the lower class limit is 9.5, the upper class limit is 19.5 and the mid value is

$= \dfrac{9.5 + 19.5}{2} \\[1em] = \dfrac{29}{2} \\[1em] = 14.5$

In case of frequency 20-29 the lower class limit is 19.5, the upper class limit is 29.5 and the mid value is

$= \dfrac{19.5 + 29.5}{2} \\[1em] = \dfrac{49}{2} \\[1em] = 24.5$

In case of frequency 30-39 the lower class limit is 29.5, the upper class limit is 39.5 and the mid value is

$= \dfrac{29.5 + 39.5}{2} \\[1em] = \dfrac{69}{2} \\[1em] = 34.5$

In case of frequency 40-49 the lower class limit is 39.5, the upper class limit is 49.5 and the mid value is

$= \dfrac{39.5 + 49.5}{2} \\[1em] = \dfrac{89}{2} \\[1em] = 44.5$

Answered By

19 Likes