Marco grows two types of tomato plants, type A and type B. He counts the number of tomatoes growing on each tomato plant. The results for type A plants are shown in the table. Number of tomatoes on plant: 17, 18, 19, 20, 21, 22. Frequency: 5, 2, 7, 3, 2, 1.

1. (a)(i)Calculate the mean number of tomatoes per plant.[2]
2. (a)(ii)Calculate the range.[1]
3. (a)(iii)The mean number of tomatoes per plant for type B plants is 17.1 and the range is 8. Make two comments comparing the number of tomatoes growing on type A and type B plants. 1 2[2]
4. (b)(i)Marco also grows strawberries. He records the masses, m grams, of 120 of his strawberries. The frequency table shows the results. Mass (m grams): 5 < m ≤ 10, 10 < m ≤ 15, 15 < m ≤ 20, 20 < m ≤ 25, 25 < m ≤ 30. Frequency: 15, 38, 45, 17, 5. Draw a cumulative frequency diagram to represent these results. [Figure with cumulative frequency grid][3]
5. (b)(ii)Marco uses strawberries with a mass greater than 21 grams to make jam. Use your diagram to find an estimate for the percentage of strawberries he uses to make jam.[3]

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