So I have a series of data inputs that provide a consumption figure based on the age and income of groups over time; i.e.

the data is laid out as so:

Date, Consumption, # of Customers in Age Category 1, # of Customers in Income Category One

I have multiple dates (monthly back to 2000)...

Consumption Varies

Age Category (basically a Kids Group, Young Adults, Adults, Older Adults) 4 Groups

Income Group (basically a Low Income, Med Income, High Income, Very High Income)... (4 groups)

So for each date I have 16 observations (4 ages * 4 groups)

NOTE: I don't have individual records (i.e. I don't have a record for each customer... I only have aggregate records... i.e. the 16 records per date/month.


I'm trying to figure out the "influence" of Age versus that of income.

Was thinking I could look at some type of coefficients that would help explain... but I've been out of school a LONG time, and don't know what in the heck to read/where to look, etc.

Can anyone provide a little directions or what to read up on, etc?