User manual - Distribution (DIST)

44
kk
kk
k Normal Distribution
uu
uu
uNormal Probability Density
Normal probability density calculates the probability density of nomal distribution that data
taken from a specified x value. Normal probability density is applied to standard normal
distribution.
πσ
2
f(x) =
1
e
–
2
2
σ
(x – µ)
2
µ
(σ > 0)
Perform the following key operation from the statistical data list.
5(DIST)
b(Norm)
b(P.D)
Data is specified using parameter specification. The following shows the meaning of each
item.
x .................................. data
σ .................................. population standard deviation ( σ > 0)
µ .................................. population mean
Save Res .................... list for storage of calculation results (None or List 1 to 20)
Execute ....................... executes a calculation or draws a graph
• Specifying σ = 1 and µ = 0 specifies standard normal distribution.
After setting all the parameters, align the cursor with [Execute] and then press one of the
function keys shown below to perform the calculation or draw the graph.
• 1(CALC) ... Performs the calculation.
• 6(DRAW) ... Draws the graph.
Calculation Result Output Example
• p ... normal probability density
# V-Window settings for graph drawing are set
automatically when the SET UP screen's
[Stat Wind] setting is [Auto]. Current V-
Window settings are used for graph drawing
when the [Stat Wind] setting is [Manual].