11–4 Statistical
Operations
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
4
20
z
4
)
Deletes the first data pair.
5
20
6
)
Reenters the first data pair.
There is still a. total of two
data pairs in the statistics
registers.
Statistical Calculations
Once you have entered your data, you can use the functions in the statistics
menus.
Statistics Menus
Menu
Key
Description
L.R.
{
,
The linear–regression menu: linear
estimation {
º
ˆ
} {
¸
ˆ
} and curve–fitting {
T
}
{
P
} {
E
}. See ''Linear Regression'' later in
this chapter.
x
,
y
z
/
The mean menu: {
º
} {
¸
} {
·
º
}. See
"Mean" below.
s,
σ
z
2
The standard–deviation menu: {
Uº
} {
U¸
}
{
σ
º
} {
σ
¸
}. See "Sample Standard
Deviation" and "Population Standard
Deviation" later in this chapter.
SUMS
z
5
The summation menu: {
Q
} {
º
} {
¸
} {
º
} {
¸
}
{
º¸
}. See "Summation Statistics" later in
this chapter.
Mean
Mean is the arithmetic average of a group of numbers.
Press
{
/
{
º
} for the mean of the
x
–values.
Press
{
/
{
¸
} for the mean of the
y
–values.
Press
{
/
{
·
º
}
for the
weighted
mean of the
x
–values using the
