ScatterPlots & Line of Best Fit

Front

What is a scatter plot?

Back

A scatter plot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

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 is the line of best fit?

Back

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

Tags

CCSS.8.EE.B.5

Front

How do you determine the slope of a line of best fit?

Back

The slope of a line of best fit is determined by the change in the y-values divided by the change in the x-values between two points on the line.

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 line of best fit?

Back

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

Tags

CCSS.HSF.LE.B.5

Front

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

Back

A strong correlation is identified when the points on the scatter plot are closely clustered around the line of best fit.

Front

What is the purpose of using a line of best fit in data analysis?

Back

The purpose of using a line of best fit is to make predictions about one variable based on the value of another variable.

Tags

CCSS.8.EE.B.5

Front

What does it mean if there is no correlation in a scatter plot?

Back

No correlation means that there is no discernible relationship between the two variables, and the points are scattered randomly.

Tags

CCSS.HSS.ID.B.5