CBSE Class 11-science Answered
Age
0-10
10-20
20-30
30-40
40-50
50-60
60-70
70-80
No of persons
20
25
32
40
42
35
10
8
Asked by Topperlearning User | 19 Nov, 2016, 02:51: AM
Expert Answer
Age |
No of persons fi |
xi |
fixi |
fixi2 |
0-10 |
20 |
5 |
100 |
500 |
10-20 |
25 |
15 |
375 |
5625 |
20-30 |
32 |
25 |
800 |
20000 |
30-40 |
40 |
35 |
1400 |
49000 |
40-50 |
42 |
45 |
1890 |
85050 |
50-60 |
35 |
55 |
1925 |
105875 |
60-70 |
10 |
65 |
650 |
42250 |
70-80 |
8 |
75 |
600 |
45000 |
Answered by | 19 Nov, 2016, 04:51: AM
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