scatter plots and trend lines

Front

What does a negative slope indicate in a scatter plot?

Back

A negative slope indicates that as one variable increases, the other variable decreases. For example, if the slope is -5/7, it means losing 5 hours of sleep for every 7 cups of coffee consumed.

Tags

CCSS.8.EE.B.5

Front

What is a positive association in a scatter plot?

Back

A positive association means that as one variable increases, the other variable also increases. For example, more hours studied may lead to higher test scores.

Tags

CCSS.HSS.ID.B.5

Front

What is a negative association in a scatter plot?

Back

A negative association means that as one variable increases, the other variable decreases. For example, more coffee consumed may lead to less sleep.

Tags

CCSS.HSS.ID.B.5

Front

What does 'no association' mean in a scatter plot?

Back

'No association' means 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

How do you calculate the slope of a line?

Back

The slope can be calculated using the formula: slope = change in y / change in x, also known as 'rise over run'.

Tags

CCSS.8.EE.B.5

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 trend line represent in a scatter plot?

Back

A trend line represents the general direction or pattern of the data points in a scatter plot, helping to visualize the relationship between the variables.

Front

What is the difference between linear and nonlinear associations?

Back

Linear associations show a straight-line relationship between variables, while nonlinear associations show a curved relationship.

Tags

CCSS.8.F.A.3

Front

What does it mean if a scatter plot has a positive linear association?

Back

It means that as one variable increases, the other variable also increases in a consistent manner, forming a straight line when graphed.

Tags

CCSS.HSS.ID.B.5

Front

What does it mean if a scatter plot has a negative linear association?

Back

It means that as one variable increases, the other variable decreases in a consistent manner, forming a straight line with a negative slope.

Tags

CCSS.HSF-LE.A.1B