Example: Is a result of 61 per cent for likelihood to take a service on wave 1 of a tracking survey (sample of 750 people) significantly higher than 54 per cent likelihood on a subsequent wave of the tracking survey (sample of 750 people)?
Answer: Yes it is – at the 95 per cent confidence level the difference needed is 4.99 per cent - the observed difference is 7.0 per cent.
If you would like to run this test on your own data please use the calculator below.
