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Statistical Operations 11–1
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
11
Statistical Operations
The statistics menus in the HP 32SII provide functions to statistically analyze a
set of one– or two–variable data:
Mean, sample and population standard deviations.
Linear regression and linear estimation (
x
ˆ
and
y
ˆ
).
Weighted mean (x weighted by y).
A Summation statistics: n,
Σ
x,
Σ
y,
Σ
x
2
,
Σ
y
2
, and
Σ
xy.
L.R.
x y r m b
x y x w
x , y
n x y x y xy
22
sx sy x y
σσ
s ,
σ
SUMS
Entering Statistical Data
One– and two–variable statistical data are entered (or deleted) in similar
fashion using the
6
(or
z
4
) key. Data values are accumulated as
summation statistics in six statistic's registers (28 through 33), whose names
are displayed ire the SUMS menu. (Press
{
5
and see
Qº¸º
¸
º¸
.
Note
Always clear the statistics registers before entering a new set of
statistical data (press
z
b
{
Σ
} ).