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20-09-2022
Biology

Answered

(2 marks) 5. The heights of some trees in a nursery were measured to the nearest centimetre and as shown below 29 23 27 29 27 23 28 22 34 25 31 21 31 36 21 30 35 27 28 24 32 20 35 40 32 26 28 23 32 (a) Use the above data to complete the table below Height in cm Mid-point (x) 31 33 16 15-19 20-24 25-29 30-34 35-39 40-44 (b)Calculate (i) the mean height 25 36 (c) State the modal class. 19 31 40 22 15 28 37 42 38 17 26 Frequency (f) (ii) to 2 decimal places the median height 23 32 34 29 20 (3 marks) (fx) (2 marks) (2 marks) (1 mark)

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