Question

the mean(x^-) of a frequency distribution is 45 if the value of fi = 20 then the value of fixi is​

Answer 1

Answer:

Estimating the Mean From a Frequency Distribution. Sometimes we are given a chart showing frequencies of certain groups instead of the actual values. ... If we multiply each midpoint by its frequency, and then divide by the total number of values in the frequency distribution, we have an estimate of the mean.