Term
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Definition
| a scatterplot shows the relationship between two quantitative variables measured on the same cases |
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Term
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Definition
direction (if one increases, the other increases = positive, if one increases, the other decreases = negative)
form - what it looks like (straight, curved)
strength - (amount of scatter) |
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Term
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Definition
| a point that does not fit the overall pattern seen in the scatterplot |
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Term
| response/explanatory,x-,y-variable |
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Definition
| in a scatterplot, you must choose a role for each variable. assign to the y-axis the response variable that you hope to predict or explain. assign to the x-axis the explanatory or predictor variable that accounts for, explains, predicts, or is otherwise responsible for the y-variable |
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Term
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Definition
| a numerical measure of the direction and strength of a linear association |
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Term
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Definition
| a variable other than x and y that simultaneously affects both variables, accounting for the correlation between the two |
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