ClassPad 330 Plus Manual

20090601
7-11-4
Distributions
u
Program, eActivity or Main Application
Command: NormPD

Command Syntax
x
value,

value,

value
Input Example:
NormPD 37.5,2,35
Normal Cumulative Distribution
Menu: [Distribution]-[Normal CD]
Description: This command calculates the probability of normal distribution data falling
between
a
and
b
.
dx
a
: lower bound (Lower)
b
: upper bound (Upper)
Definition of Terms
Lower : lower bound
Upper : upper bound

: population standard deviation (

> 0)

: population mean
Calculation Result Output
prob
: normal distribution probability
p
z
Low : standardized lower limit
z
value
z
Up : standardized upper limit
z
value
Example
Upper bound : 36 (lower bound : −
∞
)
Population standard deviation : 2
Population mean : 35
• Statistics Wizard Operation
(1) On the menu bar, tap [Calc] and then [Distribution].
(2) Select [Normal CD] and then tap [Next >>].
(3) Input values.
(4) Tap [Next >>].
(5) To display the graph, tap
$
.