In a histogram, the class 30≤x<40 30\leq x<40\,30≤x<40 has frequency density 2.8.
a.
Find the frequency in the class.
[2]
b.
State what determines the area of a histogram bar.
[1]
Markscheme
2.2.2 Area in a histogram is proportional to frequency Questions
8 exam-style questions on OCR (MEI) A Level Maths 2.2.2 Area in a histogram is proportional to frequency. Each one has a worked solution and a mark scheme showing where the marks go.