CAIE IGCSE Mathematics Core C9.5 Scatter Diagrams Topic Practice

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Question 1

[Maximum number: 5]

Question (a)

(a)

Ten students eat cereal with milk for breakfast.
The amounts are shown in the table.

Table for Question (a) — CAIE IGCSE Mathematics Core
Figure for Question (a) — CAIE IGCSE Mathematics Core
[ 5 ]

Question (i)

(i)

Complete the scatter diagram.

The first six points have been plotted for you.

[ 2 ]

Question (ii)

(ii)

For these students, describe the relationship between the amount of cereal and the amount of milk.

[ 1 ]

Question (iii)

(iii)

On the grid, draw a line of best fit.

[ 1 ]

Question (iv)

(iv)

Another student has 280 ml of milk with her cereal.

Use your line of best fit to estimate an amount of cereal this student has.

___ g

[ 1 ]

Question 2

[Maximum number: 1]
Figure for Question 2 — CAIE IGCSE Mathematics Core

The scatter diagram shows the prices of different sized televisions.

Write down the type of correlation shown in the scatter diagram.

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