Line of Best Fit

Front

What is the 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.SP.A.2

Front

What does a positive correlation indicate?

Back

As one variable increases, the other variable also increases.

Tags

CCSS.HSS.ID.B.5

Front

What does a negative correlation indicate?

Back

As one variable increases, the other variable decreases.

Tags

CCSS.HSS.ID.B.5

Front

What is a scatter plot?

Back

A graph that displays values for typically two variables for a set of data.

Tags

CCSS.8.SP.A.1

Front

How can you determine the line of best fit visually?

Back

By drawing a line that minimizes the distance between the line and all data points.

Front

What is the purpose of the line of best fit?

Back

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

Tags

CCSS.HSF-LE.A.1B

Front

What does it mean if there is no correlation?

Back

There is no predictable relationship between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

How do you use the line of best fit to make predictions?

Back

By extending the line to estimate the value of one variable based on the value of the other.

Front

What is the formula for calculating the slope of a line?

Back

Slope (m) = (y2 - y1) / (x2 - x1) for two points (x1, y1) and (x2, y2).

Tags

CCSS.8.EE.B.5

Front

What is the y-intercept in the context of a line of best fit?

Back

The point where the line crosses the y-axis, representing the value of y when x is 0.

Tags

CCSS.HSF.LE.B.5