Scatter Plots: Line of Best Fit

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two variables by displaying data points on a two-dimensional axis.

Front

What does a line of best fit represent in a scatter plot?

Back

A line of best fit represents the trend in the data, helping to summarize the relationship between the variables and make predictions.

Front

How do you determine the line of best fit?

Back

The line of best fit is determined by finding the line that minimizes the distance between the data points and the line itself.

Front

What is the purpose of using a line of best fit?

Back

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

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.

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.

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.

Front

If the slope of a line is negative, what does that tell you about the relationship between the variables?

Back

If the slope is negative, it indicates that there is an inverse relationship between the variables; as one increases, the other decreases.

Front

What does the y-intercept represent in a line of best fit?

Back

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

Front

How can you use a scatter plot to make predictions?

Back

You can use a scatter plot to make predictions by extending the line of best fit to estimate the value of the dependent variable for a given independent variable.