Students’ and adults’ estimates of the masses of sweets.
(a)[7]
A sample of 50 students made estimates of the mass $M$ grams of sweets.
(i) Calculate an estimate of the mean.
(ii) Complete the histogram.
(b)[2]
Another group of 50 adults also estimated the mass. Use the histograms to make two comparisons between the distributions of the students and adults.
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