Question

The mean length of 9 childrens' big finger is 8.5cm. The mean length of 7 adults' big finger is 16.4cm. What is the mean length (rounded to 2 DP) of these 16 people's big finger?

Answer 1

Explanation:

(8.5 cm + 16.4 cm) ÷ 16

= 24.9cm ÷ 16

= 1.25

= 1.25 cm