Average (Mean) and Range

1) Six children recorded their times (in minutes) to do a jigsaw: 12, 10, 15, 19, 11, 17. What is the range of these times?

• 9 minutes
• 12 minutes
• 15 minutes
• 19 minutes

2) A small range of values indicates a .......

• greater consistency of the data
• smaller number of data values
• higher average
• The data are inconsistence

3) Of 20 customers at a vending machine, 8 spent 50p, 5 spent 60p, 4 spent 75p and 3 spent £1. What was the total amount spent?

• £2.85
• £8.50
• £10.90
• £13.00

4) Kaya made a list of his homework marks. 3, 2, 3, 4, 1, 4, 5 and 4. Work out his mean homework mark

• 2.5
• 3.5
• 3.25
• 4.25

5) Kaya made a list of his homework marks. 3, 2, 3, 4, 1, 4, 5 and 4. Write down the mode of Kaya’s marks.

• 1
• 2
• 3
• 4
• 5

6) Asam took math tests and got scores of 68, 71, 71, 84, 53, 62 and 67. What's Asam's mode score?

• 62
• 53
• 71
• 84

7) Lydia rolled an 8-sided dice ten times.Here are her scores.5, 12, 5, 3, 8, 8, 6, 6, 3&2 a) Work out Lydia’s median score.

• 2.5
• 3.5
• 5.5
• 8.5

8) Lydia rolled an 8-sided dice ten times.Here are her scores.5, 12, 5, 3, 8, 8, 6, 6, 3&2 b) Work out the mean of her scores.

• 5.8
• 3.1
• 5.1
• 6.1

9) In a two-week period, a train was this many minutes late each day:3 0 0 0 7 4 5 2 0 1 14 0 5 1 a) What was the mean average number of minutes late?

• 2
• 3
• 4
• 8

10) In a two-week period, a train was this many minutes late each day:3 0 0 0 7 4 5 2 0 1 14 0 5 1 b) What was the median average number of minutes late?

• 1.5
• 2.5
• 3.5
• 4.5