Math, asked by kalyan5273, 7 months ago

Find the mean age in years from the frequency distribution given below:

Age (in yrs) 15-19 20-24 25-29 30-34 35-39 40-44 45-49 Total

Frequency 3 12 21 15 5 4 2 3​

Answers

Answered by amitnrw
5

Given :  Age (in yrs) 15-19 20-24 25-29 30-34 35-39 40-44 45-49  

Frequency 3 12 21 15 5 4 2 3​

To find :  mean age in years

Solution:

Class        Mean Class         Freq f       A = (mean -32)/5      A *f

15 - 19              17                       3                -3                   -9

20 - 24             22                     12               -2                   -24

25 - 29            27                     21                 -1                   -21

30 - 34             32                    15                 0                    0

35 - 39              37                    5                  1                     5

40 - 44              42                    4                  2                    8

45 - 49             47                      2                  3                   6

               Total                           62                                    -35

Mean  = 32  +  5 * (-35)/62

= 32  - 2.82

= 29.18

mean age in years  = 29.18

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Answered by gamerhelo7
0

Answer: 66.8

Step-by-step explanation:

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