Question

PLEASE HELP!!

The median of the following data is 16. Find the missing frequencies a and b if the total frequencies is 70.

Class Frequency

0-5 12
5-10 a
10-15 12
15-20 15
20-25 b
25-30 6
30-35 6
35-40 4




25 points pleaseee helpp. Will mark as brainliest!!

Answer 1

The answer is in the attachment ......

Answer 2

a = 8, b = 7

Step-by-step explanation:

n = 70, n/2 = 35

n = 5 , l = 15, f = 15, cf = 24 + a

Median = 15 + (35 - 24 - a) * s

16 = 15 + 11 - a/3

-8 = - a

a = 8

For finding b,

55 + a + b = 70

b = 70 - (55 + 8)

b = 70 - 63

b = 7

Learn more: Find the frequency

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