It's "unfair" it's not "statistically valid" but a largely unemployed rental populace in an area that I'm not stoked about visiting at 2:00 a.m. doesn't give me the warm and fuzzies.  

U.S Bureau of Labor Statistics is a good place to start!

I accounted for the damage and statistical probability of future floods.

Until you have 500 pieces of mail out there I wouldn't get discouraged. 35 pieces is way to small of a sample size to base any statistics off of.

If you are a licensee... you know it is worth it.. if you are not.. you have to take a hard look at the statistics.. and get a good agent to demonstrate their value.

It may not happen to you and that would be great if it didn't; statistically, you need to play the odds. 

Note: I did not write this article, just posting for my BP'rs who are interested in Detroit Market News.Median home prices continued to rise in the majority of metropolitan areas in the second quarter, with the national year-over-year price showing the strongest gain in seven-and-a-half years, according to the latest quarterly report by the National Association of REALTORS®.Despite rising prices and higher mortgage interest rates, a companion breakout of income requirements to buy a median-priced home on a metro area basis shows most buyers remain well positioned to afford a home in their area.The median existing single-family home price increased in 87 percent of measured markets, with 142 out of 163 metropolitan statistical areas (MSAs) showing gains based on closings in the second quarter compared with the second quarter of 2012.

That's not to say you won't receive calls on the first few touches, just that statistically it takes a few touches to get the ball rolling.As for your quantity to mail to there are two things that you should ask yourself:1) What is my monthly budget?

If you are just looking for statistical data, you can probably find that published for your market.  

Especially related to direct mail marketing statistically it takes multiple mailings to the same recipient to get a call back.