Continental Research
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4500 Colley Avenue
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Norfolk, VA 23508
14
Margin of Error is ± 5.45%
This research included a random sample of 323 households in Chesapeake. Because scientific
selection techniques were used, data in this report should vary only slightly from the findings of
a complete census. The “Margin of Error” is the
maximum
amount a percentage in this report
is likely to vary from what a full census of households would produce. Although the calculation
is only an estimate, with a sample of 323 residents, we are 95% certain that any percentage in
this report that is near 50% is accurate within ± 5.45 percentage points.
Results that are above or below 50% tend to be more accurate (i.e., have a smaller Margin of
Error, which is better). This table displays the Margin of Error for various percentages found in
this report where (n=323). Notice that the Margin of Error is the same for 90% vs. 10%, 55% vs.
45%, etc.
If the reported
The Margin of
percentage = 99%
Error =
±1.09%
95%
±2.38%
90%
±3.27%
85%
±3.89%
80%
±4.36%
75%
±4.72%
70%
±5.00%
65%
±5.20%
60%
±5.34%
55%
±5.43%
- - - - - - -
50%
- Highest Margin of Error -
±5.45%
- - - - - - -
45%
±5.43%
40%
±5.34%
35%
±5.20%
30%
±5.00%
25%
±4.72%
20%
±4.36%
15%
±3.89%
10%
±3.27%
5%
±2.38%
1%
±1.09%
