Showing posts with label Confidence interval calculator. Show all posts
Showing posts with label Confidence interval calculator. Show all posts

Wednesday, August 11, 2010

Confidence interval calculator

Confidence interval calculator:

If we want to check the sample means we should give the percentage of survey and number of interview updation. Confidence level should be considered under limitations. This calculator indicate the value of correct population percentage in a particular range. For example, we interview the people and get the 95 percentage confidence level and give the sample size as 50,60% of survey result. These values are given to the confidence level calculator. Then we get the confidencr interval and true proportion range as 13.58 and 46.42 to 73.58% respectively.

Following steps are followed in confidence interval calculator:

Step 1: Confidence level.

First step is select the values for calculation. After the survey it establish the confidence interval. We can choose the percentage of confidence interval. Siginificance level is relate the confidence level. This could also help us on factors of 27

Step 2: Sample size.

This give the response numbers for questions.

Step 3: Enter observed study result.

Sample respondents are given as frequency or percentage. We can choose any one of these two.