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0580/12 May/Jun 2021, Question 15: Scatter Diagrams and Correlation

Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 2 marks

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The question, in short

From a scatter diagram with three points, choose the correct correlation statement, and from four diagrams of the same data with different lines, identify the best line of best fit.

Summarised in our own words. Use the official paper for the exact wording and the diagram.

Part (a) · 1 mark

Select which statement about correlation is correct for the scatter diagram with three plotted points.

  1. 1There are only three points, too few to judge a trend.
  2. 2It is not possible to tell if there is correlation as there are not enough points

AnswerIt is not possible to tell if there is correlation as there are not enough points

Part (b) · 1 mark

Decide which of the four diagrams, A to D, shows the most appropriate line of best fit.

  1. 1The line of best fit should follow the trend of the points with roughly equal numbers of points on each side.
  2. 2The line in Diagram C does this, so the answer is C

AnswerC

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Also searched as: 0580/12/M/J/21 · 0580_s21_qp_12 · 0580 s21 12 · question 15.
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