HP 300s - 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
nxyxy

•

–

•
nx
2
x

()
2
–

-------------------------------------------------
r
nxyxy

•

–

•
nx
2
x

()
2
–




ny
2
y

–()
2
+

•



-----------------------------------------------------------------------------------------------------=
x
ˆ
yA–
B
------------=
y
ˆ
x

2
x

y

2
y

xy

x

3
x

2
y
x

4
x
xσ
n
xσ
n 1–
y
yσ
n
yσ
n 1–