To determine which pair of variables would show a positive correlation in a scatterplot, we need to consider how the two variables relate to each other:
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A person's height and the person's grade on the math test: This is likely not to have a correlation, either positive or negative, as height and math grades are not directly related.
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The depth of the water in a pond and the amount of rainfall: This could show a positive correlation, as typically, more rainfall would increase the depth of water in a pond.
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The number of miles driven and the number of people on the bus: Generally, this is not likely to have a positive correlation, as more miles driven could mean fewer people per bus if there are fewer buses, or if people are driving their own vehicles instead.
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The number of concert tickets purchased and the number of concert tickets still available for purchase: This is typically a negative correlation. As more tickets are purchased, fewer tickets will be available.
Based on these considerations, the pair that would be expected to have a positive correlation is:
The depth of the water in a pond and the amount of rainfall.
1 answer