Question

A group of students is investigating whether the smoothness of surface affects the force of friction. Each student pushes a book on two different surfaces. One surface is ice and the other is concrete. The distance traveled by the book on each surface is shown. Experimental Observations Student 1 Student 2 Student 3 Student 4 Distance traveled by book on ice 23 cm 21 cm 24 cm 22 cm Distance traveled by book on concrete 15 cm 18 cm 16 cm 17 cm Based on the table, which conclusion is correct about the average distance traveled?

Answer 1

The average distance the book traveled on ice is greater than the average distance the book traveled on concrete.

Answer 2

To find the average (aka mean) of a group of numbers, all we need to do is add them up then divide that number by how many numbers we started with

23 + 21 + 24 + 22 = 90

90 ÷ 4 = 22.5

Therefore, the average distance the book traveled on ice is 22.5 cm

15 + 18 + 16 + 17 = 66

66 ÷ 4 = 16.5

Therefore, the average distance the book traveled on concrete is 16.5 cm

In conclusion, the average distance the book traveled on ice is greater than the average distance the book traveled on concrete

Hope this helps you

-AaronWiseIsBae