Question

In a Zonal athletic long jump meet the distances jumped by $10$ atheletes are: $205cm,200cm,275cm,260cm,259cm,199cm,252cm,239cm,228cm$ and $281cm$. Find the arithmetic mean of the jumps.

• A. $212.4cm$
• B. $222.5cm$
• C. $230.8cm$
• D. $239.8cm$

Answer 1

The correct option is D $239.8cm$

Distances jumped by $10$ athletes (in $cm$): $205,200,275,260,259,199,252,239,228$ and $281$
Mean $=\frac{\text{Sum}}{\text{Number of athletes}}$
Mean $=\frac{205+200+275+260+259+199+252+239+228+281}{10}$
Mean $=\frac{2398}{10}$
Mean $=239.8$