Question

the mean of the data 4/7 , 4/9 , 3/7 ,5/9 is ​....
a)5
b)13
c)18
d)9
The answer is 13 , but i need explanation of answer....​

Answer 1

Answer:

Mean = Sum of observations / No of observations

Mean = ( 4/7+4/9+3/7+5/9 )/ 4

Mean =( 9/9 + 7/7)/ 4

Mean = 2/4

Mean = 1/2

If we go by the formula this is what we will get .

I guess there is some misprint in this question.

Please check

Regards

Answer 2

Step-by-step explanation:

Mean = sum of observation

_______________

No. of observation

4/7 + 4/9 + 3/7 + 5/9

_______________

= 4

9/9 + 7/7

= _______

4

2

= ___

4

1

= ___

2