HP 35s Scientific Statistical Operations, Statistical Operations, statistical data (press , Weighted mean (x weighted by y), Mean, sample and population standard deviations

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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 ( xˆ and yˆ ).Weighted mean (x weighted by y).Summation statistics: n, Σx, Σy, Σx2, Σy2, 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 	()).

Statistical Operations 12-1