Scatter Plots
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Eight students sat a mathematics test and a science test. The table shows their marks.
\begin{array}{|l|l|l|l|l|l|l|l|l|}
\hline \text { maths } & 10 & 20 & 30 & 35 & 40 & 50 & 55 & 52 \\
\hline \text { science } & 15 & 25 & 20 & 30 & 35 & 40 & 50 & 55 \\
\hline
\end{array}
The marks are drawn on a scatter plot, with the maths mark on the horizontal axis.
a) Is the pattern of the points linear or non-linear?
b) Describe how the science marks change as the maths marks increase.
c) Is the relationship positive or negative?
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