Handling Data 2
2 marks · EasyThe incomplete frequency table shows the number of books read by students in a month.
| Number of books (x) | Frequency (f) |
|---|---|
| 0 | 4 |
| 1 | 9 |
| 2 | ? |
| 3 | 7 |
(a)[1 mark]
If 25 students were surveyed, work out the missing frequency.
(b)[1 mark]
Write down the mode.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) 5
(b) 1
Common mistakes: Cumulative frequency errors
Show mark scheme and worked solution
Marking points
M1 (a) · 1 mark · Correctly calculates missing frequency as 25 - (4+9+7).
B1 (b) · 1 mark · Mode is the number with highest frequency: 1.
Worked solution
a) 4 + 9 + ? + 7 = 25; so ? = 25 - (4 + 9 + 7) = 5.
b) Mode = 1 (frequency 9 is highest).