Scatter plots- Lines of Best Fit

Front

What is a scatter plot?

Back

A scatter plot is a graphical representation of two variables where each point represents an observation in the dataset, showing the relationship between the variables.

Tags

CCSS.8.SP.A.1

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatter plot, indicating the general direction of the data points.

Tags

CCSS.8.EE.B.5

Front

How do you determine the line of best fit visually?

Back

The line of best fit can be determined visually by drawing a line that minimizes the distance between itself and all the points on the scatter plot.

Tags

CCSS.8.EE.B.5

Front

What does a positive association in a scatter plot indicate?

Back

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

Tags

CCSS.HSS.ID.B.5

Front

What does a negative association in a scatter plot indicate?

Back

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

Tags

CCSS.HSF-LE.A.1B

Front

What does it mean if a scatter plot shows no relationship?

Back

If a scatter plot shows no relationship, it means that there is no discernible pattern or correlation between the two variables.

Tags

CCSS.HSS.ID.B.5

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What factors can affect the fit of a trend line?

Back

Factors that can affect the fit of a trend line include the distribution of data points, outliers, and the overall trend of the data.

Front

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

Back

The purpose of a trend line is to summarize the relationship between variables and to make predictions based on the data.

Tags

CCSS.HSF-LE.A.1B

Front

How can you tell if a trend line is a good fit for the data?

Back

A trend line is a good fit if it closely follows the pattern of the data points, with most points being near the line.

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What is the significance of outliers in a scatter plot?

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Outliers are data points that differ significantly from other observations and can skew the results and affect the accuracy of the trend line.

Tags

CCSS.8.SP.A.1