Question

Whats the formula for mean and median?

Answer 1

the mean of a set of data equals the sum of the terms, divided my the number of terms

the median is the middle term


if the set is \(\{x_1, x_2, x_3, x_4, x_5\}\)

the mean is \(\bar x=\dfrac{x_1+x_2+x_3+x_4+x_5}{5}\)


if the terms are in order ie \(x_1\leq x_2\leq x_3\leq x_4\leq x_5\)

the median is \(x_3\)