Question

If `sumf_i d_i = 10,000, sumf_i = 100` and A = 2000, then find mean `(barx)`.

Answer 1

`sumf_i d_i = 10,000, sumf_i = 100`, A = 2000

`bar(d) = (sumf_i d_i)/(sumf_i)`

= `(10,000)/100`

= 100

Mean = `bar(X) = A + bar(d)`

= 2000 + 100

= 2100

The mean is 2100.