Which of the following is true about a trend line for data?
A.) The minimum data point always lies on the trend line.
B.) Every data point must lie on the trend line.
C.) The trend line describes the pattern in the data if one exists.
D.) The trend line includes the effect of all outliers in the data.
C.) The trend line describes the pattern in the data if one exists.
The trend line is a line that best fits the data points in a scatter plot. It is used to describe the general pattern or trend in the data. It is not necessary for every data point to lie on the trend line, and the trend line may not be affected by outliers in the data.