Normal Probability Distribution Calculation - Casio fx-9860G AU User Manual

k Normal Probability Distribution Calculation
You can calculate normal probability distributions for single-variable statistics with the
RUN MAT mode.
•
Press K6(g)3(PROB)6(g) to display a function menu, which contains the following
items.
• {P(}/{Q(}/{R(} ... obtains normal probability {P(
t
• { (} ... {obtains normalized variate
• Normal probability P(
the following formulas.
Standard Normal Distribution
t
P ( )
t
0
○ ○ ○ ○ ○
Example The following table shows the results of measurements of the height
of 20 college students. Determine what percentage of the students fall
in the range 160.5 cm to 175.5 cm. Also, in what percentile does the
175.5 cm tall student fall?
Performing Statistical Calculations
t x
( ) value}
t t t
), Q( ), and R( ), and normalized variate
0
Class no. Height (cm) Frequency
1 158.5 1
2 160.5 1
3 163.3 2
4 167.5 2
5 170.2 3
6 173.3 4
7 175.5 2
8 178.6 2
9 180.4 2
10 186.7 1
6-4-7
t t t
)}/{Q( )}/{R( )} value
t
Q ( )
t
20050401
t x
( ) are calculated using
t
R ( )
t
0