User manual
44
distribution with the specified mean
mu, which must be a real number >
0. x can be an non-negative integer
(SINGLE) or a list of integers
(LIST).
Note: The default value for mu (m) is 0. For Poissonpdf
and Poissoncdf, you must change it to a value > 0.
1-Var Stats and 2-Var Stats results
Important note about results: Many of the regression
equations share the same variables a, b, c, and d. If
you perform any regression calculation, the regression
calculation and the 2-Var statistics for that data are
stored in the StatVars menu until the next statistics or
regression calculation. The results must be interpreted
based on which type of statistics or regression
calculation was last performed. To help you interpret
correctly, the title bar reminds you of which calculation
was last performed.
Variables Definition
n Number of
x
or (
x
,
y
) data points.
v or w Mean of all
x
or
y
values.
Sx or Sy Sample standard deviation of
x
or
y
.
sx or sy Population standard deviation of
x
or
y
.
Gx or Gy Sum of all
x
or
y
values.
Gx
2
or Gy
2
Sum of all
x
2
or
y
2
values.
Gxy
Sum of (
x
…
y
) for all xy pairs.
a(2-Var) Linear regression slope.
30XPlusMV_OM.flpgl Page 44 Friday, November 14, 2014 1:57 PM