Question

What is the formula to find the mean of grouped data

Answer 1

Answer:

Total of Observations/ Number of Observations

Step-by-step explanation:

Answer 2

Answer:

there are 3 methods

Step-by-step explanation:

direct method :- ∑fixi / ∑fi

Assumed mean method :-  a + (∑fidi / ∑fi)

Step deviation method :- a + h(∑fiui / ∑fi)

where di = xi - a

a = assumed mean (any xi in data)

ui = di / h

h = class height = upper limit + lower limit / 2

∑fi = sum of all frequencies and so on.

I hope i was able to help you