Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, where each point represents an observation in the dataset, showing the relationship between the variables.

Tags

CCSS.8.SP.A.1

Front

What does correlation mean in the context of scatterplots?

Back

Correlation refers to the strength and direction of a linear relationship between two variables, which can be positive, negative, or zero.

Tags

CCSS.HSS.ID.B.5

Front

What does a negative correlation 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 is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatterplot, minimizing the distance between the line and all the data points.

Tags

CCSS.8.EE.B.5

Front

How do you determine the slope of a line in a scatterplot?

Back

The slope of a line in a scatterplot is determined by the change in the y-value divided by the change in the x-value (rise over run).

Tags

CCSS.8.EE.B.5

Front

What does a slope of -5/7 represent in a real-world context?

Back

A slope of -5/7 means that for every 7 units increase in the x variable, the y variable decreases by 5 units.

Tags

CCSS.8.EE.B.5

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 y-intercept represent in a scatterplot?

Back

The y-intercept represents the value of the dependent variable when the independent variable is zero.

Tags

CCSS.HSF.LE.B.5

Front

How can you identify a strong correlation in a scatterplot?

Back

A strong correlation in a scatterplot is identified by points that are closely clustered around the line of best fit.

Tags

CCSS.HSS.ID.B.5

Front

What does it mean if a scatterplot shows no correlation?

Back

If a scatterplot shows no correlation, it means there is no discernible relationship between the two variables, and the points are scattered randomly.

Tags

CCSS.HSS.ID.B.5