HP 300s Scientific Calculator - Manual (Page 58)

52
B =
= A + Bx
Sum Sub-menu (   (STAT)  (Sum))
Var Sub-menu (   (STAT)  (Var))
Select this menu item: When you want to obtain this:

Sum of squares of the X-data

Sum of the X-data

Sum of the squares of the Y-data

Sum of the Y-data

Sum of products of the X-data and Y-data

Sum of cubes of the X-data

Sum of (X-data squares X Y-data)

Sum of biquadrate of the X-data
Select this menu item: When you want to obtain this:
 n Number of samples
 Mean of the X-data
 Population standard deviation of the X-data
 Sample standard deviation of the X-data
 Mean of the Y-data
 Population standard deviation of the Y-data
 Sample standard deviation of the Y-data
n xy x y  •  –  •
n x
2
x  ( )
2
– 
-------------------------------------------------
r
n xy x y  •  –  •
n x
2
x  ( )
2
–

 
 
 
n y
2
y 
– ( )
2
+
 •
 
 
 
----------------------------------------------------------------------------------------------------- =
xˆ
y A –
B ------------ = yˆ
x  2
x 
y  2
y 
xy 
x 
3
x 
2
y
x  4
x
x σ
n
x σ
n 1 –
y
y σ
n
y σ
n 1 –