M3 T1&T2 Test Review Scatterplots, M.A.D., Random Samples

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What is Mean Absolute Deviation (M.A.D.)?

Back

Mean Absolute Deviation (M.A.D.) is a measure of the dispersion of a set of data points. It represents the average distance between each data point and the mean of the data set.

Tags

CCSS.6.SP.B.5C

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How do you calculate the Mean Absolute Deviation?

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1. Find the mean of the data set. 2. Calculate the distance of each data point from the mean. 3. Find the mean of these distances.

Tags

CCSS.6.SP.B.5C

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What does a positive correlation indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

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CCSS.HSS.ID.B.5

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What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Tags

CCSS.HSS.ID.B.5

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What does no correlation mean?

Back

No correlation means that there is no predictable relationship between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point represents an observation.

Tags

CCSS.8.SP.A.1

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What is the purpose of using random samples in statistics?

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Random samples are used to ensure that every individual has an equal chance of being selected, which helps to eliminate bias and allows for generalization of results.

Tags

CCSS.HSS.IC.B.3

Front

What is the correlation coefficient?

Back

The correlation coefficient is a numerical measure of the strength and direction of a relationship between two variables, ranging from -1 to 1.

Tags

CCSS.HSS.ID.C.8

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What does a correlation coefficient of 1 indicate?

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A correlation coefficient of 1 indicates a perfect positive correlation between two variables.

Tags

CCSS.HSS.ID.B.5

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What does a correlation coefficient of -1 indicate?

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A correlation coefficient of -1 indicates a perfect negative correlation between two variables.

Tags

CCSS.HSS.ID.B.5