In the formula for finding the mean of grouped frequency distribution, ui =
(A) (B) h(xi – a) (C) (D)
Solution. Mean: It is the average of the given numbers/observations. It is easy to calculate mean. First of all, add up all the observations and then divide by the total number of observations.
Also we know that di = xi – a and
put di = xi – a
Hence option C is correct