Question

40. Find the mean, median and mode of the following frequency distributions 0 -10/10-20/20-30/30-40
40-50/50-60/60
Class
8 frequency
7
15
20
12
8
10
please share the answer ​

Answer 1

Step-by-step explanation:

$mean \\ = \frac{8 + 7 + 15 + 20 + 12 + 8 + 10}{7} \\ = \frac{80}{7} = 11.43$

$as \: the \: median \: is \: the \: middle \\ \: of \: the \: set \: of \:the \: numbers \: \\ so \: arrange \: the \: numbers \: in \: \\ ascending \: order$

= 7,8,8,10,12,15,20

so, Median =10

$as \: mode \: is \: the \: most \: common \: \\ number \: in \: a \: data \: \\ so \: mode = 8$

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