Part 9: Scatter Plots and Associations

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

Back

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

Tags

CCSS.HSF-LE.A.1B

Front

What is the purpose of a linear model in statistics?

Back

A linear model is used to describe the relationship between two variables using a straight line, allowing for predictions based on the data.

Front

What does the slope of a linear equation represent?

Back

The slope represents the rate of change of the dependent variable (y) with respect to the independent variable (x).

Tags

CCSS.8.EE.B.5

Front

What does the y-intercept of a linear equation indicate?

Back

The y-intercept indicates the value of y when x is zero.

Tags

CCSS.HSF.LE.B.5

Front

What is a two-way table?

Back

A two-way table is a statistical table that displays the frequency distribution of two categorical variables.

Tags

CCSS.8.SP.A.4

Front

What does a strong linear association look like in a scatter plot?

Back

A strong linear association is characterized by data points that are closely clustered around a straight line.

Front

What is the difference between a weak and strong linear association?

Back

A weak linear association has data points that are more spread out from the line, while a strong linear association has points that are closely aligned with the line.

Tags

CCSS.HSS.ID.B.5