16–18 Statistics Programs
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
0.8
f
%/)
Stores 0.8 (100 percent minus 20
percent) in Q(X) and calculates X.
Grouped Standard Deviation
The standard deviation of grouped data, S
xy
, is the standard deviation of
data points x
1
, x
2
, ... , x
n
, occurring at positive integer frequencies f1, f2, ... ,
fn.
∑
∑
∑
∑
−
−
=
1)(
)(
2
2
i
i
ii
i
x
f
f
fx
x
S
This program allows you to input data, correct entries, and calculate the
standard deviation and weighted mean of the grouped data.
Program Lines: Description
Start grouped standard deviation program.
;
Clears statistics registers (28 through 33).
!
Clears the count N.
Checksum and length: 104F 006.0
Input statistical data points.
"!
%
Stores data point in X.
"!
Stores data–point frequency in F.
Enters increment for N.
Recalls data–point frequency f
i
.
Checksum and length: 4060 007.5
Accumulate summations.
!
L
Stores index for register 28.
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