Question

Find the average of $80,90,100,110,120,130$.

• A. $100$
• B. $105$
• C. $110$
• D. $115$

Answer 1

The correct option is B $105$

Given numbers$=80,90,100,110,120,130$
Average $=\frac{\text{Sum of observations}}{\text{Number of observations}}$

Average $=\frac{80+90+100+110+120+130}{6}$

$=\frac{630}{6}=105$