Help with VB idea

[NoOne]

Hello,

I am trying to get some ideas on some mathmatical equations on how to find a
trend from what seems as random sell/theft actions?

It is for a software app I want to do for school that involves the
following:

1. Input number of items missing on a daily basis. (The items themselves are
already in a database)

2. With the numbers of missing items I want to:
A. > to < missing
B. How many missing per item per day and develop/spot a trend on a daily
,weekly basis.
C. Predict any possible trends in the future, weekly and Monthly and
yearly.
D. Be able to determine a trend from a fluke sell/theft.

2A and 2B I think I have an idea how to do that but 2C and 2D I am lost.

Can anybody help me with this,

Thanks

K.