Question

In the annual school newsletter, the administrators at Booneville High School reported the number of students that biked to school each month. According to the graph, what was the rate of change between March and May? students per month

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Answer 1

Answer:

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Answer 2

Height (cm)

C.I. Number of students

f Mid value

x fx

110-120 4 115 460

120-130 24 125 3000

130-140 20 135 2700

140-150 32 145 4640

150-160 20 155 3100

Total ∑f = 100 ∑fx = 13900

Mean height =

∑x

∑fx

=

100

13900

=139

Thus, the mean height of students in maths club is 139 cm.