Scatter Plots & Trend Lines

Front

What is a scatter plot?

Back

A graph that shows the relationship of two data sets.

Front

As x increases, y decreases. What type of correlation is this?

Back

Negative Correlation.

Front

What is the method used to find the line of best fit?

Back

Linear Regression.

Front

As x increases, y increases. What type of correlation is this?

Back

Positive Correlation.

Front

What is the difference between an actual y-value and a predicted y-value called?

Back

Residual.

Front

What does a positive correlation indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation indicate?

Back

As one variable increases, the other variable decreases.

Front

What is the purpose of a trend line in a scatter plot?

Back

To show the general direction of the data points.

Front

What is interpolation in the context of scatter plots?

Back

Estimating a value within the range of known data points.

Front

What is extrapolation in the context of scatter plots?

Back

Estimating a value outside the range of known data points.