CBSE Class 10 Answered
Find
the mean of the following frequency distribution using assumed mean method:
Classes
2
- 8
8
- 14
14
- 20
20
- 26
26
- 32
Frequency
6
3
12
11
8
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Classes |
fi |
xi |
di = xi - A |
di fi |
2 - 8 |
6 |
5 |
-12 |
-72 |
8 - 14 |
3 |
11 |
-6 |
-18 |
14 - 20 |
12 |
(17) = A |
0 |
0 |
20 - 26 |
11 |
23 |
6 |
66 |
26 - 32 |
8 |
29 |
12 |
96 |
Here,
A = 17
= 17 + 1.8 = 18.8
Answered by | 04 Jun, 2014, 03:23: PM
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