Question

what is the mean of 20,40,80,100,and 90 ?​

Answer 1

Answer:

it is a even number.

Step-by-step explanation:

hope it is helpful for you..

Answer 2

Answer:

Step-by-step explanation:

Less than 20      15

Less than 40      37

Less than 60      74

Less than 80      99

Less than 100     120

Class Interval   Mean        Frequency      Class mean * frequncy

0-20                  10                15                  150

20 - 40              30               22                 660

40 -60               50               37                 1850

60-80                70               25                 1750

80-100               90              21                  1890

                        Total           120                   6300

Mean = 6300/120  = 52.5

I hope it helps you

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