8th Grade Scatterplots

Front

What is a scatter plot?

Back

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

Tags

CCSS.8.SP.A.1

Front

What does a positive linear association in a scatter plot indicate?

Back

A positive linear 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 association?

Back

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

Tags

CCSS.HSS.ID.B.5

Front

What is a linear association?

Back

A linear association is when data points in a scatter plot cluster around a straight line, indicating a consistent relationship between the variables.

Tags

CCSS.HSS.ID.B.5

Front

What is a nonlinear association?

Back

A nonlinear association occurs when the relationship between the variables cannot be accurately represented by a straight line.

Tags

CCSS.HSS.ID.B.5

Front

What is the purpose of a trend line in a scatter plot?

Back

A trend line is used to summarize the relationship between the variables and can help predict future values.

Tags

CCSS.8.SP.A.2

Front

What does it mean if data points lie close to a trend line?

Back

It indicates a strong relationship between the variables, suggesting that one variable can be used to predict the other.

Tags

CCSS.8.SP.A.2

Front

What is the y-intercept in a scatter plot?

Back

The y-intercept is the point where the trend line crosses the y-axis, representing the value of the dependent variable when the independent variable is zero.

Front

How can you identify a scatter plot that does not suggest a linear relationship?

Back

A scatter plot that shows a curved pattern or random distribution of points indicates a nonlinear relationship.

Tags

CCSS.8.F.A.3