What Percentage Is A Statistically Valid Sample. This exceeds 1000 so in this case the maximum would be 1000. Given your 10 acceptable error rate you can assume that if youd asked every person in your region to take your survey the actual proportion in favor of the longer school day would range from 60 to 80.
This affects your confidence interval also known as your margin of error. For example if you use a margin of error of 4 and 47 percent of your sample picks an answer you can be sure. For education surveys we recommend getting a statistically significant sample size that represents the populationIf youre planning on making changes in your school based on feedback from students about the institution instructors teachers etc a statistically significant sample size will help you get results to lead your school to success.
Oct 21 2014 The CI around the difference tells us that it will most likely fluctuate between about 1 and 10 in favor of Landing Page A.
Margin of Error or Confidence Interval. Given your 10 acceptable error rate you can assume that if youd asked every person in your region to take your survey the actual proportion in favor of the longer school day would range from 60 to 80. This exceeds 1000 so in this case the maximum would be 1000. The precision percentage for the point estimate derived from the particular sample can then be reported at 80 90 95 or even 99 confidence level.
