Handling Data 6
2 marks · EasyTwo histograms represent the test marks for two different science groups, P and Q. The modal class for Group P is 30–50 marks and for Group Q is 70–90 marks.
Which group performed better overall? Write the modal class of the better performing group and explain why it shows better overall performance.
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
Group Q; modal class is 70–90 marks. This is the highest scoring group, so Group Q performed better overall.
Also accept: Group Q; 70–90 marks; Group Q performed better overall.
Common mistakes: Group P
Show mark scheme and worked solution
Marking points
B1 · 1 mark · States Group Q as performing better overall.
B1 · 1 mark · Identifies modal class for Group Q as 70–90 marks and gives suitable reason (modal class is highest scoring).
Worked solution
Group Q's modal class is 70–90 marks, which is higher than Group P's 30–50 marks, so Group Q performed better overall.