Answer:
The most widely used method of calculating an average is the 'mean'. When the term 'average' is used in a mathematical sense, it usually refers to the mean, especially when no other information is given. Add the numbers together and divide by the number of numbers. (The sum of values divided by the number of values).
Explanation:
Arithmetic Mean by Direct Method - formula
∑i=1nf= Sum of all the frequencies. This is also denoted by N. ∑i=1nfixi= Sum of the product of frequencies and corresponding observations.
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Answer:
To calculate the mean or arithmetic mean of a grouped data.
Explanation:
