Give definition and formula for the following:a) Meanb) Median

Question

Give definition and formula for the following:

a) Mean

b) Median

c) Variance

d) Standard deviation

06 Jan 2025

Answer :

Word Count : 468

Mean:

The mean is a measure of central tendency, representing the average of a set of numbers. It is calculated by summing all the values in a dataset and then dividing the sum by the total number of values. The mean is useful for understanding the overall trend of the data, though it can be influenced by outliers.

The formula for the mean is:

\[
\text{Mean} (\mu) = \frac{\sum_{i=1}^{n} X_i}{n}
\]

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