8.5(d) Scatter Plot Trend Line Predictions

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 grid.

Front

What does a trend line represent in a scatter plot?

Back

A trend line is a straight line that best represents the data points in a scatter plot, indicating the general direction of the data.

Front

How can you use a trend line to make predictions?

Back

You can extend the trend line to estimate values for the dependent variable based on new values of the independent variable.

Front

What is the independent variable in a scatter plot?

Back

The independent variable is the variable that is manipulated or changed, typically plotted on the x-axis.

Front

What is the dependent variable in a scatter plot?

Back

The dependent variable is the variable that is measured or observed, typically plotted on the y-axis.

Front

How do you determine the slope of a trend line?

Back

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

Front

What does a positive slope indicate in a trend line?

Back

A positive slope indicates that as the independent variable increases, the dependent variable also increases.

Front

What does a negative slope indicate in a trend line?

Back

A negative slope indicates that as the independent variable increases, the dependent variable decreases.

Front

What is interpolation in the context of scatter plots?

Back

Interpolation is the process of estimating a value within the range of known data points using the trend line.

Front

What is extrapolation in the context of scatter plots?

Back

Extrapolation is the process of estimating a value outside the range of known data points using the trend line.