Question

Algebra 1 help

Answer 1

Two groups of students were asked how far they lived from their school. The table below shows the distances in miles:



Group A (distance in miles) 1 1.5 3 3.2 2.8 1.5 1.8 2.5 2.2
Group B (distance in miles) 2 2.5 3.2 3 1.8 2.4 3 1.5 1.8


Which statement best compares the mean distances for the two groups?
It is equal for Group A and Group B.
It is greater for Group B than Group A.
Its value for Group A is double its value for Group B.
Its value for Group B is double its value for Group A.

Answer 2

mean distance for group A = sum of all distances/no. of students
= 19.53/9 = 2.17 ...(1)
similarly,
mean distance for group B = 2.17 ...(2)

from eqn. (1) and (2)

mean distances for the two groups - It is equal for Group A and Group B
so answer is a