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Statistics For Reporters and Bloggers for $10

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Statistics For Reporters and Bloggers

With a few statistics reporters and bloggers can give their articles an 'official' aura. The two programs I wrote are Confidence Interval and Comparison of Two Proportions.
Imagine you interview 30 people and twenty say they will vote for candidate A. You now enter a SAMPLE SIZE of 30 and an OBSERVED NUMBER of 20. Usually you will choose a confidence level of 95% (default). The program then tells you that you are 95% sure that the percentage of people who will vote for A is between 49.8% and 83.5% with the sample proportion being 66.7%.
With the Comparison of Two Proportions: Imagine you interview 40 people in town A and 21 say they will vote for X. You also find that in town B 34 out of 50 you interview people will vote for X. The program now tells you if there is a significant difference between the proportions and you can report what the program says.


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Reporter Blogger Statistics

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