HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 123

hp40g+.book Page 19 Friday, December 9, 2005 1:03 AM For instance, the data set (1,1), (3,9), (4,16), (2,4) would be plotted and traced in the order (1,1), (2,4), (3,9), (4,16). Trouble-shooting a plot If you have problems plotting, check that you have the following: • The correct or menu label on (Numeric view). • The correct fit (regression model), if the data set is two-variable. • Only the data sets to compute or plot are checkmarked (Symbolic view). • The correct plotting range. Try using Auto Scale (instead of ), or adjust the plotting parameters (in Plot Setup) for the ranges of the axes and the width of histogram bars (HWIDTH). In mode, ensure that both paired columns contain data, and that they are the same length. In mode, ensure that a paired column of frequency values is the same length as the data column that it refers to. Exploring the graph The Plot view has menu keys for zooming, tracing, and coordinate display. There are also scaling options under . These options are described in"Exploring the graph" on page 2-7. Statistics aplet's PLOT view keys Key Meaning CLEAR Erases the plot. Offers additional pre-defined views for splitting the screen, overlaying plots, and autoscaling the axes. Moves cursor to far left or far right. Statistics aplet 10-19