Question

Part A

The dot plot shows the daily lunch money of a group of students.


Each dot represents one student.


1


6


2 3 4 5


Daily Pocket Money ($)


What is the mean daily pocket money?

Answer 1

*diagram of the dot plot is attached below

Answer:

$2.15

Explanation:

Mean daily pocket money or average daily pocket if the group if students shown in the for plot that is attached below = the sum of the pocket money received by the students ÷ the total number of students.

From the diagram of the dot box attached below, the total number if students = 13 (each dot represents a student)

Sum of the pocket money received by the students = 4(1) + 5(2) + 3(2) + 4(2)

= 4 + 10 + 6 + 8

Sum = 28

Therefore, mean daily pocket money = 28 ÷ 13 = $2.15