9.1 Scatter Plot & Associations

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What is a scatter plot?

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A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

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CCSS.8.SP.A.1

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What does a positive association in a scatter plot indicate?

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A positive association indicates that as one variable increases, the other variable also tends to increase.

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CCSS.HSS.ID.B.5

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What does a negative association in a scatter plot indicate?

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A negative association indicates that as one variable increases, the other variable tends to decrease.

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CCSS.HSF-LE.A.1B

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What does 'no association' mean in the context of scatter plots?

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'No association' means that there is no discernible relationship between the two variables; changes in one do not affect the other.

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CCSS.HSF-LE.A.1B

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How can you identify a strong positive association in a scatter plot?

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A strong positive association is identified when the data points closely follow a straight line that slopes upwards.

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CCSS.HSF-LE.A.1B

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How can you identify a strong negative association in a scatter plot?

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A strong negative association is identified when the data points closely follow a straight line that slopes downwards.

Tags

CCSS.HSF-LE.A.1B

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What is the difference between weak and strong associations in scatter plots?

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Weak associations have data points that are more spread out and do not closely follow a line, while strong associations have data points that closely follow a line.

Tags

CCSS.HSS.ID.B.5

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What is an example of a positive association?

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An example of a positive association is the relationship between the number of hours studied and test scores; generally, more study hours lead to higher scores.

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CCSS.HSS.ID.B.5

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What is an example of a negative association?

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An example of a negative association is the relationship between the temperature of a drink and the number of ice cubes; as the temperature increases, the number of ice cubes decreases.

Tags

CCSS.HSS.ID.B.5

Front

What is an example of no association?

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An example of no association is the relationship between the number of letters in a person's name and the last digit of their phone number.