HP 30B 12 Statistical Operations

12 Statistical Operations

:z

DWN

Press		Descriptive
	DWN	(y items 2 Vars		DWN
I			Only)
to
select:
			INPUT
2 Vars, 1
Var, or 1
		Nb Item
Freq.
		x Mean

	y Mean
	x Std. Dev.
	y Std. Dev.
DWN
	x Population	DWN
	y Population
	S.E. Samp. x
	S.E. Samp. y

Predictions
	DWN
(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*

Pred x
	DWN

Pred y

a

b

C

(ax2+bx+c only)*

Correlation

(Not ax2+bx+c)*

Covariance

(Not ax2+bx+c)*

Sums

(y items 2 Vars Only)

INPUT

Sigma x

Sigma y

Sigma x2

Sigma y2

Sigma xy

Quartiles*

DWN (y items 2

Vars Only)

INPUT

x Min

x Q1

x Median

x Q3

x Max

DWN

y Min

y Q1

y Median

y Q3

y Max

Figure 1 The Menu Map for the Statistics Menu

*ax2+bx+c and Quartiles do not apply to the HP 20b.

Statistical Operations 69