HP 10bII Statistics, Q, r, m, Sx, Sy, σx, ￿σy, ∑ y, ∑ y￿, y – b, (∑ [)2, (∑ y)2, (∑ [)2, ∑ y￿ –, (∑ y)2, ∑ xy –, ∑ xy –, (∑ y)2, ￿y = mx + b, b = y – mx ￿x, ∑ y ￿￿

Statistics

[

=

∑ [

￿￿

=

∑ y ￿￿

∑ [\

[Z =

Q

Q

∑ \

∑

[￿

(∑ [)2

– ---

----Q-------

Sx =

---------

-Q----–-----

￿-----------

∑ y￿

(∑ y)2

– ---

---Q-------

Sy =

--------

--Q----–-----

￿----------

∑ [￿ –

(∑ [)2

∑ y￿ –

(∑ y)2

-----

--Q-------

------

Q-------

σx =

￿σy

=

￿

Q---------------

---

-----------

Q---------------

∑ xy –

-∑----x---∑-----y-

r =

n



∑ x

2

(

∑ x)2 

∑ y

2

–

(∑ y)2



– -----

-n-------

 

------n----

---

∑ xy –

-∑-----x--∑-----y-

m =

n

--(---∑-----x--)---2-

∑ x

2

–

------

n-------

ˆ

=

y – b

ˆ

b = y – mx ￿x

----------

￿y = mx + b

m

B: More About Calculations 135