# 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

 C. I. Exclusive C. I. 10 - 19 9.5 - 19.5 20 - 39 19.5 - 29.5 30 - 39 29.5 - 39.5 40 - 49 39.5 - 49.5

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

(9.5 + 19.5)/2 = 14.5

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

(19.5 + 29.5)/2 = 24.5

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

(29.5 + 39.5)/2 = 34.5

In case of frequency 39.5 - 49.5 the lower class limit is 39.5, the upper class limit is 49.5 and mid-value is
(39.5 + 49.5)/2 = 44.5

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Chapter 18: Statistics - Exercise 18 (A) [Page 228]

#### APPEARS IN

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