Plotting - HP 40gs User Manual

hp40g+.book Page 15 Friday, December 9, 2005 1:03 AM
Two-variable

Plotting

Statistics aplet
Statistic Definition
Mean of x- (independent) values.
MEANX
Σ Sum of x-values.
X
Σ Sum of x
X2
Mean of y- (dependent) values.
MEANY
Σ Sum of y-values.
Y
Σ Sum of y
Y2
Σ Sum of each xy.
XY
SCOV Sample covariance of independent
and dependent data columns.
PCOV Population covariance of
independent and dependent data
columns
CORR Correlation coefficient of the
independent and dependent data
columns for a linear fit only
(regardless of the Fit chosen).
Returns a value from 0 to 1, where
1 is the best fit.
RELERR The relative error for the selected
fit. Provides a measure of accuracy
for the fit.
You can plot:
•
histograms ( )
•
box-and-whisker plots (
•
scatter plots ( ).
Once you have entered your data (
data set ( ), and defined your Fit model for two-
variable statistics (
data. You can plot up to five scatter or box-and-whisker
plots at a time. You can plot only one histogram at a time.
2
-values.
2
-values.
)
), defined your
- ), you can plot your
SETUP SYMB
10-15