Calculating summary statistics, Calculating test statistics -4, Scatterplot of the data and the regression curve – HP 48g Graphing Calculator User Manual
Page 283: 2ke_eys
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To
plot a
scatterplot of the data and the regression curve:
1. Perform the regression as described above.
2. Press fi^fSTAfl F’LUT SCflTFi to plot the data using
auto-scaling (see page 23-20 for details).
3. After the plot is drawn, press ST
h
TL. to superimpose the most
recent regression model on top of the data.
Calculating Summary Statistics
There are six summary statistics available that you may use to analyze
statistical peculiarities within a data set or to compute statistics other
than those built into the STAT application.
K-COL: 1 V-CDL: 2
CflLCULftTE-.
_EK_IV
_2Ke_EYS
_EKV _NE
EMTER STflTISTICftL DfiTft_______________
21
The SUMMARY
STATISTICS Screen
The six summary statistics are:
SX
Sum
of the data in the X-COL of E D A T .
EY
Sum
of the data in the
y
--C
ij
L of E D A T .
SX2
Sum
of the squares of the data in the M--CC.
E D A T .
EY2
Sum of the squares of the data in the 'f................. CO
E D A T .
SXY
Sum of the products of corresponding X-CC
Y-COL data. E D A T .
NE
Number of rows in E D A T .
of
of
. and
1. Press ri^( STAT Hid
form.
to display the SurlMHRY STflTISTu
Statistics and Data Analysis 21-11