Algebra class Scatter Plots Correlations

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 correlation indicate in a scatter plot?

Back

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

Tags

CCSS.HSS.ID.B.5

Front

What does a negative correlation indicate in a scatter plot?

Back

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

Tags

CCSS.HSS.ID.B.5

Front

What does no correlation mean in a scatter plot?

Back

No correlation means there is no apparent relationship between the two variables; the data points do not follow a clear pattern.

Tags

CCSS.HSF-LE.A.1B

Front

How can you identify a positive correlation in a scatter plot?

Back

A positive correlation can be identified by a trend line that slopes upwards from left to right.

Tags

CCSS.HSF-LE.A.1B

Front

How can you identify a negative correlation in a scatter plot?

Back

A negative correlation can be identified by a trend line that slopes downwards from left to right.

Front

What is a trend line in a scatter plot?

Back

A trend line is a straight line that best represents the data points in a scatter plot, showing the general direction of the data.

Front

How do you use a trend line to make predictions?

Back

You can use a trend line to estimate the value of one variable based on the value of another variable by finding the corresponding point on the line.

Tags

CCSS.8.EE.B.5

Front

What is the purpose of a scatter plot?

Back

The purpose of a scatter plot is to visually display the relationship between two variables and to identify any correlations.

Front

If a scatter plot shows a trend line that is horizontal, what does that indicate?

Back

A horizontal trend line indicates no correlation between the two variables.