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2.2 Data presentation and interpretation

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Question 14

A football coach records the heights and weights of 12 players.

Height (cm)188194178175185175188193180190181169Weight (kg)7010083697758908671946861\begin{array}{c|rrrrrrrrrrrr}\text{Height (cm)}&188&194&178&175&185&175&188&193&180&190&181&169\\\text{Weight (kg)}&70&100&83&69&77&58&90&86&71&94&68&61\end{array}Height (cm)Weight (kg)​18870​194100​17883​17569​18577​17558​18890​19386​18071​19094​18168​16961​

a.

Draw a scatter diagram.

[2]
b.

Describe the relationship.

A regression line is w=1.37h−173w=1.37h-173w=1.37h−173.

[1]
c.

Interpret the gradient.

[1]
d.

Estimate the weight of a player 170 cm tall.

[2]
e.

Comment on the reliability of the estimate.

[1]
Markscheme

2.2 Data presentation and interpretation Questions

  1. A Level
  2. /Maths
  3. /2.2 Data presentation and interpretation

105 exam-style questions on WJEC A Level Maths 2.2 Data presentation and interpretation, covering 2.2.1 Data presentation and interpretation, 2.2.2 Data presentation and interpretation, 2.2.3 Data presentation and interpretation, 2.2.4 Data presentation and interpretation, 2.2.5 Data presentation and interpretation, 2.2.6 Data presentation and interpretation, 2.2.7 Data presentation and interpretation, 2.2.8 Data presentation and interpretation, and 2.2 Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.

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