Handling Data 6
1 mark · EasyA histogram shows a bar for 20 < x ≤ 40 with frequency density 2 and class width 20. What is the frequency for this bar?
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
40 (±0)
Also accept: 40
Common mistakes: 20; 2
Show mark scheme and worked solution
Marking points
A1 · 1 mark · Gives correct frequency (2 × 20 = 40).
Worked solution
Frequency = frequency density × class width = 2 × 20 = 40