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2.2 Data Presentation and Interpretation

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Question 2
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A football coach measured the heights and weights of 12 players, The data is shown below.

Height (cm)188194178175185175188193180190181169
Weight (kg)7010083697758908671946861
a.

Draw a scatter graph for this information.

[2]
b.

Give an interpretation of the correlation between the height and weight of the footballers.

[1]
c.

The equation of the regression line is w=1.37h−173w = 1.37h - 173w=1.37h−173

Give an interpretation of the gradient of this regression line.

[1]
d.

Use the equation of the regression line to estimate the weight of a player who is 170cm tall.

[2]
e.

Comment on the reliability of your estimate in part (d), giving a reason for your answer.

[1]

2.2 Data Presentation and Interpretation Questions

  1. A Level
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  3. /2.2 Data Presentation and Interpretation