20090601
7-11-5
Distributions
S
Program, eActivity or Main Application
Command:
NormCD
:
Command Syntax
Lower value, Upper value,
σ
value,
μ
value
Input Example:
NormCD −
d
,36,2,35
Inver
s
e Normal Cumulative Di
s
tribution
Menu:
[Inv. Distribution]-[Inverse Normal CD]
De
s
cription:
This command calculates the cumulative probability in a normal distribution
based on lower and upper bounds.
This command returns the upper and lower bound of integration values that
satisfy the equations below.
Tail:Left
Tail:Right
Tail:Center
Upper bound
α
is
returned.
Lower bound
α
is
returned.
Lower bound
α
and upper
bound
β
are returned.
2
α
+
β
μ
=
Definition of Term
s
Tail setting: probability value tail specification (L (Left), R (Right), C (Center))
Area :
probability value (0
Area
1)
σ
:
population standard deviation (
σ
> 0)
μ
:
population mean
Calculation Re
s
ult Output
inverse cumulative normal distribution
x
1
InvN: Upper bound when Tail:Left
Lower bound when Tail:Right or Tail:Center
x
2
InvN: Upper bound when Tail:Center
Example
Tail : Left
Probability : 0.7
Population standard deviation : 2
Population mean : 35
• Stati
s
tic
s
Wizard Operation
(1) On the menu bar, tap [Calc] and then [Distribution].
(2) Select [Inverse Normal CD] and then tap [Next >>].
(3) Select Tail setting [Left] and input values.
(4) Tap [Next >>].
(5) To display the graph, tap
.
Summary of Contents for ClassPad 330
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