Line of best Fit

Front

What is a line of best fit?

Back

A line that best represents the data on a scatter plot, showing the trend of the data points.

Tags

CCSS.8.EE.B.5

Front

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

Back

The slope is calculated by taking the change in y (vertical) over the change in x (horizontal) between two points on the line.

Tags

CCSS.8.EE.B.5

Front

What does a positive slope indicate in a line of best fit?

Back

It indicates that as one variable increases, the other variable also increases.

Tags

CCSS.8.EE.B.5

Front

What does a negative slope indicate in a line of best fit?

Back

It indicates that as one variable increases, the other variable decreases.

Tags

CCSS.8.EE.B.5

Front

What does a slope of zero indicate in a line of best fit?

Back

It indicates that there is no change in y as x changes; the line is horizontal.

Tags

CCSS.8.EE.B.5

Front

What is the y-intercept in the equation of a line?

Back

The y-intercept is the point where the line crosses the y-axis, represented by the value of y when x=0.

Front

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

Back

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

Back

It means that there is no apparent relationship between the two variables being plotted.

Tags

CCSS.HSS.ID.B.5

Front

How can you visually assess the line of best fit on a scatter plot?

Back

By drawing a straight line that minimizes the distance to all data points, ideally passing through the center of the data distribution.

Tags

CCSS.8.EE.B.5

Front

What is the purpose of a line of best fit?

Back

To make predictions about one variable based on the value of another variable.

Tags

CCSS.HSF-LE.A.1B