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What type of correlation exists between the two variables in the shown scatter plot?
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A scatter plot can be used when we have two sets of data related to individuals or events.
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This is known as bivariant data.
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We use one set for the 𝑥-coordinates and the other set for the 𝑦-coordinates.
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In this scatter plot, we have 10 data points.
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We need to decide whether these points show a positive correlation, a negative correlation, or no correlation.
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If the points generally slope upwards from left to right, we say there is a positive correlation.
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If this is the case, we can draw a line of best fit as shown.
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If the data points slope downwards from the top left to the bottom right of our scatter plot, we have a negative correlation.
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Once again, we can draw a line of best fits.
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In this question, however, we have points in the bottom-left, bottom-right, top-left, and top-right corner of our scatter plot.
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This suggests that there is no obvious pattern between the 10 data points, and we can therefore conclude there is no correlation.