Using Distribution Graphs In A Program; To Draw A Normal Cumulative Distribution Graph; To Draw A Student- T Cumulative Distribution Graph - Casio FX-CG20 AU User Manual

k Using Distribution Graphs in a Program
Special commands are used to draw distribution graphs in a program.

• To draw a normal cumulative distribution graph

DrawDistNorm <Lower>, <Upper> [, σ , ]
1
* This can be omitted. Omitting these items performs the calculation using
∫ ∫
Upper Upper
1 1
p = p =
πσ πσ
2 2
Lower Lower
• Executing DrawDistNorm performs the above calculation
in accordance with the specified conditions and draws
the graph. At this time the ZLow <
graph is filled in.
• At the same time, the
p
to variables , ZLow, and ZUp, and

• To draw a Student- t cumulative distribution graph

DrawDistT <Lower>, <Upper>, <
df + 1 df + 1
Γ Γ
∫ ∫
Upper Upper
p = p =
Γ Γ
Lower Lower
• Executing DrawDistT performs the above calculation in accordance with the specified
conditions and draws the graph. At this time the Lower <
filled in.
• At the same time, the
assigned respectively to variables
(x – μ) (x – μ) 2 2
μ μ
– –
2 2
σ σ dx dx
e e ZLow = ZLow =
2 2
< ZUp region on the
x
p
, ZLow, and ZUp calculation result values are assigned respectively
p
df
>
df + 1 df + 1
– –
2 2 2 2
x x
1 + 1 +
df df
2 2
× ×
dx dx
π π
df df × ×
df df
2 2
p
calculation result value and the Lower and Upper input values are
p
, tLow, and tUp, and
Population mean
Population standard deviation
Data upper limit
Data lower limit
Lower – μ Lower – μ
σ σ
is assigned to Ans.
Degree of freedom
Data upper limit
Data lower limit
tLow = Lower tLow = Lower
x < Upper region on the graph is
p
is assigned to Ans.
8-38
*
1
* 1
= 1 and
Upper – μ Upper – μ
ZUp = ZUp =
σ σ
tUp = Upper tUp = Upper
= 0.