Question

Calculate Arithmetic Mean of the following Marks - 50, 54, 56, 58, 59, 61, 62, 65​

Answer 1

$\sf {Arithmetic \:Mean = \frac{n_{1}+n_{2}}{2}}$

$\sf {n_{1} , n_{2} = middle \: terms \: of \: series}$

→ $\sf { A.M. = \frac{58+59}{2}}$

→ $\boxed {\sf{ A.M. = 58.5}}$