Question

7.
If Efi = 100, Efidi = 1234 then Mean (1)

Answer 1

Mean - is the average of a set of numbers.

Mean is calculated as follows.

Mean = Sum of terms of given data / Total number of terms in a given data.

Mean = ∑ fi × di / ∑ fi

From given, we have,

∑ fi × di = 1234

∑ fi = 100

Mean = 1234 / 100

∴ Mean = 12.34.