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Find the Mean for the Following Frequency Distribution: - ICSE Class 10 - Mathematics

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Question

find the mean for the following frequency distribution: 

C.I 0-50 50-100 100-150 150-200 200-250 250-300
Freq 4 8 16 13 6 3

 

Solution

Class interval  Frequency (f)  Cclass mark(x)  fx
0-50 4 25 100
50-100 8 75 600
100-150 16 125 2000
150-200 13 175 2275
200-250 6 225 1350
250-300 3 275 825
Total 50   7150

Mean= `(∑fx)/(∑ f) =7150/50=143`

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APPEARS IN

 Selina Solution for Selina ICSE Concise Mathematics for Class 10 (2018-2019) (2017 to Current)
Chapter 24: Measure of Central Tendency(Mean, Median, Quartiles and Mode)
24E | Q: 10
Solution Find the Mean for the Following Frequency Distribution: Concept: Measures of Central Tendency - Mean, Median, Mode for Raw and Arrayed Data.
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