it is assingment of statistics

Question

the age of 230 randomly selected students working in mekelle tellecommunication office is given in the following frequancy distrbution

                           age                                            No. of students

                           0-9                                                      4

                           10-19                                                  16

                            20-29                                                 f3

                            30-39                                                 f4

                            40-49                                                 f5

                            50-59                                                 6

                            60-69                                                 4

                            total                                                  230

if the median and the mode of the distrbution are 33.5 & 34.0 respectively, compute the arthimatic mean.

Answer 1

??????????? f3, f4, f5 ????????????

"arithmatik meen"...thats the AVERAEJ

"mode" is av no interest

"median" av no interest

tu get true averaej, yu gotta hav aej av all

but me spoze yu kan get a ges bi take midpoint av eech raenj

aej=0-9, assume average=4.5, time *4 in that raenj

repeet for all grueps