(a)[5]
Use a histogram to display this information.
(b)[2]
What is the largest possible value of the interquartile range for the data?
(c)[4]
Calculate estimates of the mean and standard deviation of the number of chocolate bars sold.
Mathematics 9709 · AS & A Level · Representation of data
Representation of data — practice question
The daily numbers of chocolate bars sold in a cinema over 100 days are recorded in the table below: Number of chocolate bars sold: $1$-$10$, $11$-$15$, $16$-$30$, $31$-$50$, $51$-$60$; Number of days: $18$, $24$, $30$, $20$, $8$.