Mastery Monday (8th): 12/9

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Back

Front

What is a correlation in statistics?

Back

A correlation is a statistical measure that describes the extent to which two variables change together.

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What does a scatterplot represent?

Back

A scatterplot represents the relationship between two quantitative variables.

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How do you determine the line of best fit in a scatterplot?

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The line of best fit is determined by minimizing the distance between the line and all the points in the scatterplot.

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What is the purpose of a trend line in data analysis?

Back

A trend line helps to visualize the general direction of data points in a scatterplot.

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If a scatterplot shows a positive correlation, what does that indicate?

Back

It indicates that as one variable increases, the other variable also tends to increase.

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If a scatterplot shows no correlation, what does that indicate?

Back

It indicates that there is no predictable relationship between the two variables.

Front

What is the formula for finding the slope of a line?

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Front

What does the y-intercept represent in a linear equation?

Back

The y-intercept is the value of y when x is 0, indicating where the line crosses the y-axis.

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What is the significance of the x-axis in a scatterplot?

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The x-axis typically represents the independent variable in a scatterplot.