HP 39g Graphing Calculator - Manual (Page 97)

Choose fit and
data columns
4. Select a fit in the Symbolic setup view,
ISHIFfl SETUP^SYMB
Select Linear
iSUisTfiTisTics svMeoLic setup ®
fiMSLE MEESUEE: Radians
siFiT^IBB^ai sEFiT^Linear
sEFinLinear SHFiT:Linear
SBFmLinear
CHUnSE STATISTICS MDOEL TVPE
BHBignnitgBB
Explore
statistics
You can define up to five explorations of two-variable
data, named SI to S5. In this example, we will create
just one: SI.
5. Specify the columns that hold the data you want to
analyze.
SYMB
You could have entered
your data into columns
other than C1 and C2.
HSSTfillSTICS SVMEDLIC MIEW^
S2:
F i 12:m*X+b
EMTEB IHDEPEHPEHT________________
6. Find the mean advertising time (MEANX) and the mean
sales (MEANY).
|NUM|
a-VAR
SI
MEANX is about 3.3
minutes and MEANY is
about $1796.
MEANH
ika
MEANY
EY
iva
ipill
BO
17R5.B33
10??5
aasBBras
^^3333333333^^^^^
Setup plot
7. Scroll down to display the value for the correlation
coefficient (CORR) . The CORR value indicates how well
the linear model fits the data.
[ t 1 9 times
The value is 0.8995 to
four significant digits.
a-VAR SI
2va
IRY
SCDY
PCDY
CORR
RELERR
aa33B7as
H1S35
1135.BE?
3HS.3BB3
,899530938561
Change the plotting range to ensure all the data points are
plotted (and select a different point mark, if you wish).
\SYWfY\SEWP-PLOT
0 7 I ENTER I
[FTI 100 I ENTER I
4000 I ENTER I
S»STftTISTICS PLOT SETUPS*
KRNG: -2 7
VRNG: -100 4000
SHMARK:” S5HRRK:K
CHDQSE HARK FDR SCATTER PLOT
Statistics aplet 8-3