CBSE Class 11-science Answered
Find the mean variance and standard deviation for the following data
Interval (group) Frequency 37-46 19 47-56 23 57-66 27 67-76 28Please provide solution to this question
Asked by Topperlearning User | 16 Nov, 2016, 06:21: AM
Expert Answer
Interval |
Frequency fi |
xi |
fixi |
fixi2 |
36.5-46.5 |
19 |
41.5 |
788.5 |
32722.5 |
46.5-56.5 |
23 |
51.5 |
1184.5 |
61001.5 |
56.5-66.5 |
27 |
61.5 |
1660.5 |
102120.5 |
66.5-76.5 |
28 |
71.5 |
2002 |
143143 |
Answered by | 16 Nov, 2016, 08:21: AM
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