
Unit 7: Numeracy skills
Averages - Test yourself
Find the mean of each of these sets of data:
1. 2 4 6 7 4 3 5
2. 49 50 63 61 67 59 73 68 42
3. 6 7 8 7 8 6
4. 15 16 12 19 14 20 18 17 18 16
5. 107 109 117 119 112
6. Which group of students scored best in this numerical reasoning test?
Group A: 11 12 13 6 18 17 4 12 10 15
Group B: 10 11 9 12 14 13 12 10 11 14
7. A lecturer decided to find out how punctual students really are. He recorded how late his seminar group arrived on three occasions. The table shows how many minutes late each of the ten students were on these days. What was the overall average lateness? Which day was worst? On which day were most students more than 5 minutes late?
Day 1 |
Day 2 |
Day 3 |
---|---|---|
2 |
5 |
4 |
0 |
10 |
1 |
4 |
8 |
3 |
15 |
6 |
0 |
10 |
0 |
0 |
4 |
0 |
5 |
5 |
10 |
4 |
0 |
9 |
1 |
0 |
0 |
0 |
1 |
0 |
15 |
SMILE - Numeracy skills by Tom Frank, Eric Williams and Clare Wright, University of Birmingham Careers Centre adapted by Marion Kelt Glasgow Caledonian University is licensed under a Creative Commons Attribution 3.0 Unported License.