Statisticians and Biology / Environmental ppl i need help

[TheGoodGuy]

So apparently I got way over my head and now i find my statistical project seems easier than it should be.

I am trying to see if there is decrease in air quality as there is a rise in temperature.

My data is for the year 2005, collected by the state of california and NWS. I am collecting air quality (Particulate matter (PM) and ozone) but i am using whatever is higher. So basically i am collecting over all air quality marker and not just one particular thing cause air quality is based on what is higher.. which ever is higher sets the air quality index.

So anyway after 365 peices of data of each type. I did a correlation which resulted in a value of 0.264 .

Doing an XY Scatter plot one can see it looks like a ^ in the graph.. which in reality does show some correlation as there are greater number of particulate matter stuff in teh summer than there are in teh winter.

But regression shows a 'cloud' .. so i am kinda lost on what else i should do?

I guess i could do mean, median, mode, and SD? or should i not?

Any help would be so helpful..

I put the file here:


http://webpages.csus.edu/~sac53708/combinedAQT.xls

if you wanna correct something on that?

[ops_south]

In your graph you have the air quality on the x and the temp on the y axis.
I think your temp should be on the x axis as it is the independent variable.
I'm a little rusty on this, but just a thought...


--E

[TheGoodGuy]

humm you do make a good point.. im going to look into it.