The numbers of chocolate bars sold per day in a cinema over a period of 100 days are summarised in the following table. Draw a histogram to represent this information. ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................

Mathematics

IGCSE&ALevel

CAIE

Exam No：9709_s20_qp_51 Year：2020 Question No：7(a)

Answer:

Class widths: \(10,5,15,20,10\)
Frequency density \(=\) frequency \(/\) their class width: \(1.8,4.8,2,1,0.8\)
All heights correct on diagram (using a linear scale)
Correct bar ends
Bar ends: \(10.5,15.5,30.5,50.5,60.5\)

Knowledge points:

5.1.2 draw and interpret stem-and-leaf diagrams, box- and-whisker plots, histograms and cumulative frequency graphs (Including back-to-back stem-and-leaf diagrams.)

Answer:

Knowledge points:

Solution:

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