Statistical calculations, Mean – HP 35s Scientific Calculator User Manual
Page 170
12-4
Statistical Calculations
Once you have entered your data, you can use the functions in the statistics menus.
Statistics Menus
Mean
Mean is the arithmetic average of a group of numbers.
Press
(
) for the mean of the x–values.
Press
Õ
(
) for the mean of the y–values.
Press
ÕÕ
(
) for the weighted mean of the x–values using
the y–values as weights or frequencies. The weights can be integers or non–
integers.
Reenters the first data pair.
There is still a total of two
data pairs in the statistics
registers.
Menu
Key
Description
L.R.
The linear–regression menu: linear estimation
and curve–fitting . See ''Linear
Regression'' later in this chapter.
,
The mean menu:
. See "Mean"
below.
s,
σ
The standard–deviation menu:
σ σ.
See "Sample Standard Deviation" and
"Population Standard Deviation" later in this
chapter.
SUMS
The summation menu:
. See "Summation Statistics" later in this
chapter.
ˆ
ˆ
x
y