(i)[4]
Find estimates for the mean and standard deviation of the percentage of meat in these take-away meals.
(ii)[5]
Using graph paper, draw a histogram to represent the data in the table.
Mathematics 9709 · AS & A Level · Sampling and estimation
Sampling and estimation — practice question
A survey measured the proportion of meat in one particular kind of take-away meal. The findings, rounded to the nearest integer, for $193$ take-away meals are set out in the table.
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This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Use midpoints to attempt the mean calculation (frequencies may be implied)” …
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