27 March 2008

Survey--Day 3: Still Getting Better

Tonight we had 70 responses, bringing our total up to 170. I recalculated the number we need, and decided that we could get a 95% confidence rate by dropping from plus/minus 5% to plus/minus 6%, with 266 responses. I want a few extra, but we're at least looking at a succesful survey now, with maybe two day's more work. I estimate we have about 45 man hours on the phones now, which works out to about 3 3/4 responses per man hour--a lot of work for little payoff.

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