Casio fx-115ES - Manual (Page 41)

E-39
Sum Sub-menu (11(STAT)4(Sum))
Select this
When you want to obtain this:
menu item:
1
Σx 2
Sum of squares of the X-data
2
Σx
Sum of the X-data
3
Σy 2
Sum of squares of the Y-data
4
Σy
Sum of the Y-data
5
Σxy
Sum of products of the X-data and Y-data
6
Σx 3
Sum of cubes of the X-data
7
Σx 2 y Sum of (X-data squares
× Y-data)
8
Σx 4
Sum of biquadrate of the X-data
Var Sub-menu (11(STAT)5(Var))
Select this
When you want to obtain this:
menu item:
1 n Number of samples
2
o
Mean of the X-data
3 x
σ
n Population standard deviation of the X-data
4 x
σ
n –1 Sample standard deviation of the X-data
5
p
Mean of the Y-data
6 y
σ
n Population standard deviation of the Y-data
7 y
σ
n –1 Sample standard deviation of the Y-data
MinMax Sub-menu (11(STAT)6(MinMax))
Select this
When you want to obtain this:
menu item:
1minX Minimum value of the X-data
2maxX Maximum value of the X-data
3minY Minimum value of the Y-data
4maxY Maximum value of the Y-data
Reg Sub-menu (11(STAT)7(Reg))
Select this
When you want to obtain this:
menu item:
1A Regression coefficient constant term A
2B Regression coefficient B
3 r Correlation coefficient r
4 m Estimated value of x
5 n Estimated value of y