Plotting - HP 39gs User Manual

Two-variable

Plotting

Statistics aplet
Statistic
MEANX
Σ
X
Σ
X2
MEANY
Σ
Y
Σ
Y2
Σ
XY
SCOV
PCOV
CORR
RELERR
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.
Definition
Mean of x- (independent) values.
Sum of x-values.
2
Sum of x
-values.
Mean of y- (dependent) values.
Sum of y-values.
2
Sum of y
-values.
Sum of each xy.
Sample covariance of independent
and dependent data columns.
Population covariance of
independent and dependent data
columns
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.
The relative error for the selected
fit. Provides a measure of accuracy
for the fit.
)
)
).
- ), you can plot your
SETUP SYMB
), defined your
10-15