# While finding arithmetic mean for 50 scores of an ungrouped frequency distribution it was given that Σ fi.xi = 755. Find the mean of the scores.

79 views

closed

While finding arithmetic mean for 50 scores of an ungrouped frequency distribution it was given that Σ fi.xi = 755. Find the mean of the scores.

+1 vote
by (45.2k points)
selected

Number of observations = 50

Sum of observations = Σfixi = 755

Mean = $\frac {\sum f_ix_i}{\sum f_i} = \frac {755}{50} = 15.1$