K probability distribution calculation – Casio ALGEBRA FX 2.0 Statistical Graphs and Calculations User Manual
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k Probability Distribution Calculation
You can calculate probability distributions for single-variable statistics with the RUN
•
MAT
Mode.
Press K6(
g)1(PROB) to display a function menu, which contains the following items.
• {P(}/{Q(}/{R(} ... obtains probability {P(
t
)}/{Q(
t
)}/{R(
t
)} value
• {
t
(} ... {obtains normalized variate
t
(
x
) value}
• Probability P(
t
), Q(
t
), and R(
t
), and normalized variate
t
(
x
) are calculated using the
following formulas.
P (
t
)
Q (
t
)
R (
t
)
○ ○ ○ ○ ○
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?
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
6-4-5
Performing Statistical Calculations