Give definition and formula for the following:

a) Mean

b) Median

c) Variance

d) Standard deviation

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:

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

Where:
- \(\sum_{i=1}^{n} X_i\) ___ _____ ____ _________ ________ ___ ________ ____.
__________ _______ ______ _____ ____ ____ _______ __________ _______ ______ _____.
____ _________ __________ __________ _____ _________ __________ _____ ___ _____ _______.
__________ ___ _______ __________ __________ ________ _________ ____ _________ __________.
__________ _________ ________ ___ ___.
_______ ______ ________ ______ ________ _______.
________ _____ ________ _____ ____ ____ _______ ____ _________ ___.
___ _______ ____ ____ ________.
______ _________ _____ _____ __________ ___ _____ ____ _________ ________.
__________ ________ ___ ______ ________.
_____ ______ _____ ___ _______ __________ __________ _____.
___ ________ _________ _________ _________ ___ _____ ___ _________ __________ ____.
_____ _____ _________ _______ __________ __________.
__________ __________ _______ ________ ______ _________ ______ _______ ____ __________ ______.
______ ______ __________ __________ ____.
_______ _________ ________ ______ ______ ______ ___.
__________ __________ _________ _________ _______ _______ ________ _______ _________ ______ __________ ____.
_________ ____ ______ _____ ______ ______ _____ ________ __________ ____ ________ ____.
______ _______ _____ ____ _____ _________ _______.
__________ ___ ____ ________ ___ _________ _____ __________ _______ ____.
_________ __________ ________ ___ ____ _________ _____ _________.
_____ ___ _____ _________ _________ _____ ______ _____.
_______ _____ _______ ____ ____ ___ ________ ____ ______ _______ ______.
_____ ____ __________ _______ __________ ________.
___ ____ ______ ______ __________.
____ __________ _______ ______ ______ __________ ________ ____ _________ ___ _________.
__________ _________ _____ ___ _____ ___ __________ _________.
__________ ______ ______ ___ _______ ____ _________ ______ __________ __________.
__________ ___ _________ _______ _____ _____ ________.
___ _________ _______ _______ ________ ___ ______ ___ _________.
________ ________ ___ ___ __________ ______ _______.
________ ______ ________ ____ ______ _________ ______ _____.
_______ _________ _____ ________ ____ ____.
________ ______ _____ __________ _________ ______ _____ _________ _____ ____ __________.
_________ _________ __________ _______ ___ _____ ___ ____ ______ ________ ____.
_________ ____ ______ _______ ________ _________.
_____ _________ ___ ________ ______ ____ ____.
__________ _______ __________ _____ ___ ___ _____ ________ ______ _______.
_________ ________ _______ _______ _________ __________.
_____ ____ __________ _____ ______ _________ _____ ___ ____ _________ ______ _______.
______ ___ _________ ____ __________ ___ _________.
____ __________ ___ ____ ________ _______ ________ ___ __________ _____ ______.
___ ______ _______ ________ _______ __________ _____.
_____ _______ _______ _______ ___.
_________ ________ _______ ________ _________ ______ _______ ___ _________ _______ _______.
_____ ____ ______ _______ ______ _____ ________ _______ ___ _____ ___ _____.
Get Full Answer on WhatsApp