12 Statistical Calculations

The 10bII+ allows you to enter data for one- and two-variable statistics easily. Once data is entered, you can use the statistical functions to calculate the following:

Mean and standard deviation

Regression statistics or a best fit

Estimation and forecasting

Weighted mean

Summation statistics: n, Σx, Σx2, Σy, Σy2, and Σxy.

Table 12-1 Statistics keys

KeysDescription

\t

Clear statistics memory.

 

 

 

x-value ¡

Enter one-variable statistical data.

 

 

 

x-value

Delete one-variable statistical data.

 

 

 

x-valueÆy-value ¡

Enter two-variable statistical data.

 

 

x-valueÆy-valueDelete two-variable statistical data.

Opens editor for reviewing or editing statistical data.

 

 

 

\k\«

Means of x and y.

 

 

 

\T\«

Mean of x weighted by y. Also calculates b coefficient.

 

 

 

\h\«

Sample standard deviations of x and y.

 

 

 

\e\«

Population standard deviations of x and y.

 

 

 

\Z\«

Estimation of x. Also calculates r correlation coefficient.

 

 

 

\W\«

Estimation of y. Also calculates slope and m coefficient.

 

 

 

]L

Permits selection of six regression models or a best fit. Default is

linear.

 

 

Statistical Calculations 113