HP 35s

Statistical Operations 12-1
12
Statistical Operations
The statistics menus in the HP 35s provide functions to statistically analyze a set of
one– or two–variable data(real numbers):
 Mean, sample and population standard deviations.
 Linear regression and linear estimation ( and ).
 Weighted mean (x weighted by y).
 Summation statistics: n, Σx, Σy, Σx
2
, Σy
2
, and Σxy.
Entering Statistical Data
One– and two–variable statistical data are entered (or deleted) in similar fashion
using the
 (or  ) key. Data values are accumulated as summation
statistics in six statistics registers (-27 through -32), whose names are displayed in
the SUMS menu. (Press
 and see    



).
Note
Always clear the statistics registers before entering a new set of
statistical data (press
 ()).
x
ˆ
y
ˆ