The Claris Resolve User's Guide U91-600-001A pages 6-36 contains a Documentation / Publication error:
The outlined portion of Figure 6-33, representing the Regression Block, includes the row titles in column A. This implies that the range should be A2..E14. Entering this as the range when performing the regression outlined in the example, however, will result in the message "Insufficient number of observations."
The first column in your Regression Range must contain your Dependent variables so the actual range in this example should be B2..E14. The row headings in column A should not be included in the Regression Range.