Activity statistics week 2 question doubt

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Oct 20, 2020, 1:57:42 AM10/20/20

to Discussion forum for Statistics for Data Science I

AQ2.1 questio no. 7

the value of x

A cab driver got the rating as feedback from 20 customers on a given day which are as follows:

7 9 8 x 6 9 7 5 9 10 7 8 9 8 8 7 10 6 6 9

(7) If the relative frequency of rating 7 is 0.25, then what is the value of x?

Data insufficient

I need explanation how the value of x will be 7.

Please help

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Oct 20, 2020, 4:57:58 AM10/20/20

to Discussion forum for Statistics for Data Science I, Shiv Mani Tiwari

*****Yes Please, I also need this explanation****

My answer is 9.

I apologise if I am wrong, according to me,

if the relative frequency of rating 7 is 0.25 that means 28 is the total values of all the frequency because 7/28 = 0.25

So when we calculate the total value with x=0, the total value is 19

And when we calculate the total value with x=9, the total value is 28

So, I guess the answer is 9

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Oct 20, 2020, 5:12:14 AM10/20/20

to Discussion forum for Statistics for Data Science I, PoorGrammarC, Shiv Mani Tiwari

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