Question

• Calculate arithmetic mean of the following series.
Take 15 as assumed mean and use Assumed Mean Method.
Size
20
19
18
17
16
15
14
1.3
12
11
Frequency
1
2
4.
8
11
10
7.
4
2
1
​

Answer 1

Answer:

$\sqrt{333..6 = 263 = 443 + \times \times {?}^{2} }$

Explanation:

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