Bivariate Data, SM-Bank 002

People are placed into groups to complete a puzzle. There are 9 different groups.

The table shows the number of people in each group and the amount of time, in minutes, for each group to complete the puzzle.

1. Complete the scatterplot by adding the last four points from the table.  (1 mark)
    
      
2. Add a line of best fit by eye to the graph in part (a).  (1 mark)
   

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3. The graph in part (a) shows the association between the time to complete the puzzle and the number of people in the group.
4. Identify the form (linear or non-linear), the direction and the strength of the association.  (2 marks)
   

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