Question

find mean ,meadian ,mode for 20,20,20,40,40,40,40,40,40,60,60,70

Answer 1

mean = 40.8
median = 40
mode = 40

Answer 2

Mean - All all the terms and divide it by the total number of terms..

(20+20+20+40+40+40+40+40+40+60+60+70)÷12


=[(20×3)+(40×6)+(60×2)+70]÷12

=(60+240+120+70)÷12

=490÷12

=40.833

Now,Median = Mid term

In the following data mid term is 40.

Median=40.

Now,mode

Mode is the value that appears the most number of time.

It is 40.

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