| 1. Enter lists | |
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Cursor is now on x1 and y1 value is 1; xStat list is empty |
| Enter pairs of x and y values, pressing after each value |
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| 2. Graph the data | |
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Then put cursor on any equation present |
 , more if
needed |
Clear all equations |
  , then set the window so that
all x and y values will be included in the viewing rectangle. |
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The data points are shown on a scatter graph |
| 3. Do the linear regression; the equation will be of the form y(x) = a + bx | |
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Values of a, b, corr (which is r), and n on screen; a = y intercept, b = slope |
| 4. Graph the linear regression line | |
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The regression equation is pasted
into y1 The regression line is graphed |
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The data points are added to the graph |
| 5. Use the regression line to make predictions | |
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Then enter x value where prediction is to be made |
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Put cursor on line where ‘y=' is Predicted y value is given |