Which scattterplot displays data with the strongest relationship?
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Which scattterplot displays data with the strongest relationship?
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Which scatterplot displays data with the strongest relationship?
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On the basis of this formula, what type of variables are required for X and Y?
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Why is plotting the data so important before computing r?
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True or false: The formula for computing r includes z-scores for both X and Y.
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Is the direction of the relationship displayed in the scatterplot positive or negative or no relationship?
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True or false: Multiplying the z-score for X by the z-score for Y always gives positive products.
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True or false: Because the value for r is negative, we can say that the direction of the relationship is negative.
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Since r = –0.54, how should we describe the strength of the relationship?
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True or false: For these data, all of the products are positive.
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How would you describe these products?
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How would you describe these products?
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How would you describe these products?
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How would you describe these products?
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True or false: The closer the data points are to the line, the closer r is to either –1.0 or +1.0.
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With r = 0.941, is direction positive or negative?
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With r = –0.553, is direction positive or negative?
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With r = –0.226, is direction positive or negative?
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With r = –0.226, how should we describe strength?
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