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Cambridge IGCSE Statistics practice

Paper 1 structured question: Bivariate distributions

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Bivariate distributions

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Paper 1Statistical Techniques1 marks

A student collected data on hours studied and exam scores for a group of students. The scatter diagram shows points rising from left to right but with some spread.

Diagram Description

Scatter Diagram Description

Points generally rise from left to right, indicating a trend, but points are not tightly clustered.

  1. a

    Identify the type of correlation shown by the scatter diagram.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 1 structured question: Bivariate distributions

Paper 1Statistical Techniques3 marks

Data Table

Exercise and Calories Burned

Hours ExercisedCalories Burned
1200
2400
3600
4800
51000
  1. a

    Describe the correlation between hours exercised and calories burned.

    Aim for approximately 3 distinct marking points.

    [3]