Sdsd

TI-86
Data Entry:
(you will be using name other than xStat and yStat)

GRAPH
y(x)=
If you have compares, clear them or UnSelect them.

STAT & EDIT
Delete info in xStat and yStat
pointer up to the tug name calling.
Arrow all everyplace to a column with no name.
Type in XDATA
Arrow down and raise your x-values

Arrow over to a column with no name.
Type in YDATA
Arrow down and enter your y-values
break

Drawing a Scatter Plot:
STAT
PLOT
PLOT1
Highlight ON
alternate phone=xStat to bear on=XDATA
Change Name=yStat to Name=YDATA
EXIT and EXIT

GRAPH
ZOOM MORE ZDATA.
(adjusts your window for your plotted points)

determination the Linear Regression Model:
STAT & CALC
LinR
LinR XDATA,YDATA,y1
(You can find the names XDATA, YDATA stored chthonian 2nd LIST NAMES)
ENTER (you should get your equation and it will be stored in y1=)

EXIT
GRAPH
(you should see a graph of the points and the Line of Best Fit)

TI-86
Calculating and Drawing the Residuals:
STAT & EDIT
Arrow up to the column names.
Arrow over to a column with no name.




ENTER (you should see Name = A )
Type in PREDICT
ENTER (you should see PREDICT = A )
Enter y1(XDATA) (get the quotes from the stub line)
ENTER (you should see some values come in below PREDICT)

Arrow up to the column names.
Arrow over to a column with no name.
ENTER (you should see Name = A )
Type in rest
ENTER (you should see RESIDUAL = A )
Enter YDATA-PREDICT (get the quotes from the bottom line)
ENTER (you should see the residuals under RESIDUAL)

To plot RESIDUAL:
STAT & PLOT
PLOT1 Highlight OFF
PLOT3 Highlight ON
Change Name=xStat to Name=XDATA
Change Name=yStat to Name=RESIDUAL

EXIT EXIT

GRAPH
y(x)=
number Plot1 off and Plot3 on, and deselect any equations under y(x)=
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