(a)[1]
Show that $28$ onions have a mass of 200 g or less.
(b)[5]
Calculate an estimate of the mean mass. You must show your full working.
Mathematics 4024 · O Level · Histograms
Histograms — practice question
Owen measures the mass of 250 onions individually. The histogram displays the outcomes. Histogram classes and frequency densities: 160-200 density 0.7, 200-220 density 3.9, 220-240 density 4.5, 240-300 density 0.9.