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Thread: Sample Size Calculator (one group versus population)

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    Sample Size Calculator (one group versus population)




    Dear all,

    so far I couldn´t find a solution to calculate the required sample size for the following scenario:

    Goal: Research continuous variables (cost perceptions) of a population through one sample group. --> means of one group need to be significant for the entire population.

    Population: 7.500.000
    Confidence Level: 95%
    Confidence Interval: 3

    Are there any information missing like power level and does anyone know how I can calculate the required sample size for this scenario? Especially through an online tool would be highly appreciated.

    Thanks very much.

    Chris

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    Re: Sample Size Calculator (one group versus population)

    It sounds like you are asking for the sample size needed to get a 95% confidence interval for a population mean (calculated from from one sample) to be +/- 1.5 but it isn't clear to me. If so the missing information is the SD of the data.
    Can you explain a little more please? kat

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    Re: Sample Size Calculator (one group versus population)


    Quote Originally Posted by Conjoint Chirs View Post
    Goal: Research continuous variables (cost perceptions) of a population through one sample group.
    Would you tell us more about your variables? What exactly is "cost perceptions"? This doesn't sound like a continuous variable, but your explanation would help clarify that.

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