Scatter Plots

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 axis.

Tags

CCSS.8.SP.A.1

Front

What does a positive correlation in a scatter plot indicate?

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 in a scatter plot indicate?

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 discernible relationship between the two variables; the data points are scattered randomly.

Tags

CCSS.HSF-LE.A.1B

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 to predict future values.

Front

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

Back

A strong correlation is identified when the data points are closely clustered around a straight line.

Tags

CCSS.HSF-LE.A.1B

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

What does the slope of a line represent in a scatter plot?

Back

The slope represents the rate of change between the two variables; a steeper slope indicates a stronger relationship.

Tags

CCSS.8.EE.B.5

Front

What is the y-intercept in a scatter plot?

Back

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

Tags

CCSS.HSF.LE.B.5

Front

How can you determine the type of correlation from a scatter plot?

Back

You can determine the type of correlation by observing the direction of the data points: upward for positive, downward for negative, and random for no correlation.

Tags

CCSS.HSS.ID.B.5