Question

what id the mean formula

Answer 1

Heyy Buddy ❤______

Here's your Answer

Mean = Average = Sum of Observation/ Number of Observation.
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Answer 2

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$\huge\mathfrak{{ANSWER}}$...

MEAN =

$\frac{SUM \:\: OF\: \: ALL\: \: OBSERVATION}{NUMBER\: \: OF \:\: OBSERVATION}$