HP 30b HP 20b Business Consultant and HP 30b Business Professional User's Guid - Page 77
Statistical Operations, z
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12 Statistical Operations :z DWN Press I Descriptive DWN (y items 2 Vars Only) to select: 2 Vars, 1 INPUT Var, or 1 Freq. Nb Item x Mean y Mean DWN Predictions (2 Vars Only) INPUT Press I to select: a*x+b a*Ln(x) +b b*e(a*x) b*xa b*ax a/x+b ax2+bx+c* DWN Sums (y items 2 Vars Only) INPUT Sigma x Sigma y Sigma x2 DWN Quartiles* (y items 2 Vars Only) INPUT x Min x Q1 x Median x Std. Dev. DWN y Std. Dev. x Population DWN Pred x Pred y a DWN Sigma y2 x Q3 Sigma xy DWN x Max y Min y Population b S.E. Samp. x C (ax2+bx+c only)* S.E. Samp. y Correlation (Not ax2+bx+c)* Covariance (Not ax2+bx+c)* Figure 1 The Menu Map for the Statistics Menu *ax2+bx+c and Quartiles do not apply to the HP 20b. y Q1 y Median y Q3 y Max Statistical Operations 69
Statistical Operations
69
12
Statistical Operations
Figure 1
The Menu Map for the Statistics Menu
*
ax
2
+bx+c
and Quartiles do not apply to the HP 20b.
:z
Press
I
to
select:
2 Vars, 1
Var, or 1
Freq.
Descriptive
(
y
items 2 Vars
Only)
Predictions
(2 Vars Only)
Sums
(
y
items 2
Vars Only)
DWN
DWN
INPUT
INPUT
INPUT
DWN
DWN
DWN
Nb Item
x
Mean
y
Mean
x
Std. Dev.
y
Std. Dev.
x
Population
y
Population
S.E. Samp.
x
S.E. Samp.
y
Press
I
to select:
a*x+b
a*Ln(x) +b
b*e
(a*x)
b*x
a
b*a
x
a/x+b
ax
2
+bx+c*
Sigma
x
DWN
Sigma
y
Sigma
x
2
Sigma
y
2
Sigma
x
y
Quartiles*
(
y
items 2
Vars Only)
x
Min
x
Q1
x
Median
x
Q3
x
Max
y
Min
y
Q1
y
Median
y
Q3
y
Max
DWN
DWN
INPUT
Pred
x
Pred
y
a
C
(ax
2
+bx+c only)
*
Correlation
(Not
ax
2
+bx+c
)*
b
Covariance
(Not
ax
2
+bx+c
)*
DWN