A local council collected data from a number of parks in the area, recording the size of
Chapter 21, Problem 6(choose chapter or problem)
A local council collected data from a number of parks in the area, recording the size of the parks and the number of trees each contained: Size (hectares) 2:8 6:9 7:4 4:3 8:5 2:3 9:4 5:2 8:0 4:9 6:2 3:3 4:5 Number of trees 18 31 33 24 13 17 40 32 37 30 32 25 28 a Draw a scatter diagram for this data. b Would you expect r to be positive or negative? Explain your answer. c Calculate r. d Are there any outliers? e Remove the outlier, and re-calculate r.
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