Question

Find the arithmetic mean of $10$ observations $14,36,25,28,35,32,56,42,50,62$ by assuming mean as $40$. Also find mean by regular formula. Do you find the any difference.

Answer 1

$\begin{array}{c}Mean=\frac{14+36+25+28+35+32+56+42+50+62}{10}\\ =38\\ Assumedmean=40\\ difference=40-38=2\end{array}$.