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2 Unit 2: Applied Mathematics A

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Question 61

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 Unit 2: Applied Mathematics A Questions

  1. A Level
  2. /Maths
  3. /2 Unit 2: Applied Mathematics A

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