M8: Unit 8: Scatter Plot 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 is a line of best fit?

Back

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

Front

How do you determine the line of best fit?

Back

The line of best fit can be determined using methods such as least squares regression, which minimizes the distance between the data points and the line.

Front

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

Back

A positive slope indicates that as one variable increases, the other variable also increases.

Front

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

Back

A negative slope indicates that as one variable increases, the other variable decreases.

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 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

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 line of best fit to make predictions?

Back

You can use the equation of the line of best fit to substitute values of the independent variable and calculate the corresponding dependent variable.

Front

What is the significance of the correlation coefficient in relation to a line of best fit?

Back

The correlation coefficient indicates the strength and direction of the relationship between the two variables; values close to 1 or -1 indicate a strong relationship.