All keys to press and screen modes are in BOLD type.

To start off, make sure all graphs in the y(x)= mode are cleared out. If not, press clear.

Clearing Data Lists:

STAT (2^nd, +), EDIT (F2),

For each list to be cleared: Press the up arrow to highlight list title then press, CLEAR, ENTER

Entering Data:

STAT (2^nd, +), EDIT (F2),

Under "xstat" heading, enter x values (Press ENTER after each).

Under "ystat" heading, enter y values.

Done entering? EXIT

Drawing a Scatter Plot:

STAT (2^nd, +), PLOT (F3)

Pick the plot you want…usually PLOT 1 (F1)

Set your screen to look like the following

OFF

Type:

XLIST NAME = xstat

YLIST NAME = ystat

MARK =

EXIT (2 TIMES)

Press GRAPH and adjust window (WIND) to fit data.

Then press GRAPH (F5) and press CLEAR to remove bottom bar.

Linear Regression Line and Plot:

STAT (2^nd, +), CALC (F1), LinR (F3)

LIST (2^nd, -), Names (F3), xstat (F2), Press the comma, then ystat (F3), another comma.

After the second comma you must tell the machine where to put the equation it will calculate so,

CATLG-VARS (2^nd, CUSTOM), ALL (F2), PG (8 times), y then type simply 1.

It will put the equation into y1 under the graph mode.

Graphing Regression:

GRAPH, F5 yields graph and data (to view fit)

y(x) = (F1) yields equation for predictions.

P.Dueck, 1997