# 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 - Mathematics

Sum

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.

#### Solution

In case of frequency 10 - 19 the lower class limit is 10, the upper class limit is 19 and mid-value is
( 10 + 19 )/(2) = 14.5

In case of frequency 20 - 29 the lower class limit is 20, the upper class limit is 29 and mid-value is
( 20 + 29 )/(2) = 24.5

In case of frequency 30 - 39 the lower class limit is 30, the upper class limit is 39 and mid-value is
( 30 + 29 )/(2) = 34.5

In case of frequency 40 - 49 the lower class limit is 40, the upper class limit is 49 and mid-value is
( 40 + 49 )/(2) = 44.5

Concept: Class Intervals and Class Limits
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#### APPEARS IN

Selina Concise Mathematics Class 9 ICSE
Chapter 18 Statistics
Exercise 18 (A) | Q 5 | Page 228