Lesson 16 of 19
Checkpoint: missing numbers, gaps and running totals
Show on a big screenOne question on each of the later ideas. Retry as often as you like.
Class marks 5, 15 and 25 have frequencies 3, f and 5. The mean is 17. What is f?
The total is 30. The frequencies are 5, x, 8 and y. What is x + y?
The total is 50. What value does n ÷ 2 have in the median formula?
Classes 5-9 and 10-14 leave a gap of 1. What are they after the gap is closed?
Below 10: 7 readings. Below 20: 19 readings. How many are in the class 10-20?
0 of 5 answered
Finish the checkpoint to complete this lesson — you can always retry for a better score.