Calculate the arithmetic mean taking A=8.95 by (i) Short-cut Method and (ii) Coding Method for the following data.
Death Rate
3.5-4.4
4.5-5.4
5.5-6.4
6.5-7.4
7.5-8.4
8.5-9.4
9.5-10.4
10.5-11.4
11.5-12.4
12.5-13.4
13.5-14.4
F
1
4
5
13
12
19
13
10
6
4
1
The continuous data distribution is as follows-
Here
(i) By short cut method-
Arithmetic Mean
(ii) By coding method we will get the same mean as above. i.e
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