Casio fx-82ZA PLUS II User Manual

(∑x
2
y)
Sum of (X-data squares × Y-data)
(∑x
4
)
Sum of biquadrate of the X-data
Var Sub-menu ( (STAT) (Var))
Select this menu
item:
When you want to obtain this:
(n)
Number of samples
(x) Mean of the X-data
(σ
x
) Population standard deviation of the X-data
(s
x
) Sample standard deviation of the X-data
(y) Mean of the Y-data
(σ
y
) Population standard deviation of the Y-data
(s
y
) Sample standard deviation of the Y-data
Reg Sub-menu ( (STAT) (Reg))
Select this menu
item:
When you want to obtain this:
(A) Regression coefficient constant term A
(B) Regression coefficient B
(r) Correlation coefficient r
(xˆ)
Estimated value of X
(yˆ)
Estimated value of Y
MinMax Sub-menu ( (STAT) (MinMax))
Select this menu
item:
When you want to obtain this:
(minX) Minimum value of the X-data
41

Casio fx-82ZA PLUS II Specifications

General

Display	Natural Textbook Display
Number of Functions	274
Power Source	Battery
Dimensions	13.8 x 77 x 165.5 mm
Weight	100 g
Display Digits	10 + 2 digits
Memory	9 variables
Operating Temperature	0°C to 40°C
Battery Type	AAA
Battery Life	Approx. 17, 000 hours