HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 121

hp40g+.book Page 17 Friday, December 9, 2005 1:03 AM Scatter Plot Two-variable statistics. The numbers below the plot indicate that the cursor is at the first data point for S2, at (1, 6). Press to move to the next data point and display information about it. To connect the data points as they are plotted, checkmark CONNECT in the second page of the Plot Setup. This is not a regression curve. Fitting a curve to 2VAR data In the Plot view, press . This draws a curve to fit the checked two-variable data set(s). See "To choose the fit" on page 10-12. Correlation coefficient Statistics aplet The expression in Fit2 shows that the slope = 1.98082191781 and the yintercept = 2.2657. The correlation coefficient is stored in the CORR variable. It is a measure of fit to a linear curve only. Regardless of the Fit model you have chosen, CORR relates to the linear model. 10-17