Year 12 Standard Maths Bivariate Data Analysis 2

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Which of these relationships shows a strong positive correlation?

1 point

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Which of the following shows the most suitable line of best fit?

1 point

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Which of the following scatterplots would have the greatest positive correlation coefficient?

1 point

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Betty compares the heart rate with four other body measurements and graphs the results in scatterplots. Which scatterplot shows data with a correlation coefficient of about –0.9?

1 point

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What is the correlation between the variables in this scatterplot?

1 point

Weak positive

Weak negative

Strong positive

Strong negative

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The length of a child’s foot increases until they reach adulthood. What is the best description for the relationship between foot length and a child’s age?

1 point

Positive correlation

Negative correlation

Extrapolation

Interpolation

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What is the best description between living standards and life expectancy?

1 point

Constant correlation

Negative correlation.

Positive correlation.

Zero correlation.

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Which of the following values is closest to the correlation coefficient for this scatterplot?

1 point

−0.8

−0.2

0.2

0.8

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The heights, 𝐻, and weights, 𝑊 , of several people were taken and a line of best fit drawn. What is the equation of the line of best fit?

1 point

𝐻 = 0.8𝑊 + 102

𝐻 = 0.8𝑊 + 135

𝑊 = 0.8𝐻 + 102

𝑊 = 0.8𝐻 + 135

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The graph shows a scatter plot for a set of data. Which of the following values is the most appropriate Pearson’s correlation coefficient of this set of data?

1 point

–1

0.35

−0.35

−0.63

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