Polls

ROLLING 5-POLL AVERAGE

DATE 1							MOE 1	S 2
xx FEB 07		xx.x	xx.x	x.x	x.x	x.x	+/- x.x	xxxx

INDIVIDUAL POLLS

DATE 1							MOE 1	S 2
04 FEB 08	ENVIRONICS	52	25	10	6	7	+/- 3.1	1000
19 JAN 08	LEGER	48	27	11	9	5	+/- 3.3	905
13 JAN 08	STRATEGIC	58	19	9	5	9	+/- 3.5	914
22 NOV 04	2004 ELECTION	46.8	29.4	10.2	8.7	2.8	-	-

NOTES
¹ Margin of Error. MOE is related to sample size, 0.98 divided by the square root of the sample size at 95% confidence (19 times out of 20). For example, a sample of 1000 people has a MOE of +/- 3.1% and a sample of 2000 people has a MOE of +/- 2.2%. For rolling averages, the samples are assumed to be independent, thus sample sizes are aggregated to produce an overall MOE. In practice, some polling firms use lists with repeat calls; in these case, it is more precise to reduct these repeat calls from the overall sample size, thus the actual margin of error might be slightly higher. Example: 5 surveys of 1000 people would normally produce a MOE of +/- 1.4%, if samples were independent. If 25% of calls were repeat calls, however, a more accurate MOE would be based on 4000, not 5000, people, producing a MOE of +/- 1.5%.
² Sample size.