Explain direct method of calculating mean
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Posted by Jatin Verma 5 years, 3 months ago
- 2 answers
Jatin Verma 5 years, 3 months ago
Mean (or average) of observations, as we know, is the sum of the values of all the observations divided by the total number of observations. If x1, x2,… + fn xn, and the number of observations = f1 + f2 + . . . ... + fn.
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Yogita Ingle 5 years, 3 months ago
1. Direct Method
In this method, the formal definition of mean is used. The values of items are simply summed and divided by the number of observations.
Mean=∑X÷N
The formula for the direct method is as follows:
Mean= ∑fX/∑f
Here, ∑fX= Summation of the product of values of items with their corresponding frequencies
∑f= Summation of all the frequencies
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