1. The following scores are from a test out of 20.
Name of Student

Test Score 
Chloe Jones

15

Anaru Rapana

13

Berat Babich

12

Junior Reynoldsen

16

Sanjay Dravid

9

Kenny Yang

18

Seini Tua

15

a. What is the mean of the student scores?
b. What is the median of the scores?
c. What is the mode of the test scores?
d. What would be the range of the scores?
2. A netball team plays 10 games and scores the following number of goals:
a. What is the mean number of goals scored? 
3. A golfer plays eight rounds of golf in a week.

4. For each of the following scores, find:
a. the median
b. the mode
c. the mean
d. the range(i) 20, 20, 40, 20, 30
(ii) 132, 198, 100, 98, 102, 103, 95, 132, 112
(iii) 6, 9, 3, 6, 2, 1, 9, 2, 8, 7
5. A girl had a partime job at a supermarket. Her weekly pay for 8 week's work was:
$43.50, $52.80, $41.70, $54.10, $55.50, $43.00, $50.20, $49.90
a. What was her mean weekly pay?
b. What was her median pay?
c. She would have to work really hard in the eleventh week to raise her mean weekly earnings to $50.00.
How much would she need to earn in the ninth week to do this?
6. The following data shows the exam results as percentages of 30 students.
51, 42, 23, 72, 81, 50, 61, 82, 33, 97, 48, 55, 76, 52, 91,
71, 58 , 54, 88 ,71 ,67, 51, 64, 72, 48, 63, 70, 89, 91, 47
a. Copy and complete the following stem and leaf graph to show these scores
b. Use your graph to find the range of these scores.
c. Use the graph to find the median of these scores.