Question

The median and mode of a distribution are 7 and 3 respectively then the mean is​

Answer 1

Step-by-step explanation:

$\: \: \: \: \: as \: we \: know \: the \: relation$

$3median = mode + 2mean$

$3 \times 7 = 3 + 2mean$

$21 = 3 + 2mean$

$21 - 3 = 2mean$

$18 = 2mean$

$mean = \frac{18}{2} = 9$