User`s guide

Statistical Calculations
113
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, x, x
2
, y, y
2
, and xy.
Table 12-1 Statistics keys
Keys Description
\t
Clear statistics memory.
x-value
¡
Enter one-variable statistical data.
x-value
\¢
Delete one-variable statistical data.
x-value
Æ y-value ¡
Enter two-variable statistical data.
x-value
Æ y-value \¢
Delete two-variable statistical data.
v¡
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.
Σ
Σ
Σ
Σ
Σ