Ideas for my statistical analysis class project Im trying t

Ideas for my statistical analysis class project !

I\'m trying to collect at least 250 data points for a valid sample and I need an easy experiment with the minimum cost ?

Any Ideas , It does not to have to be specific , I just need the experiment to be easy so I can collect 300 data points with no effort and cost ??

Thank You

Solution

First of all for any finite study we need minimum 30-50 sample size, based on the result uptained in the piloet study we will consider the varation in the piolet sample, confedence level,and preceasion sample size of the study will be determined, based on the three factors sample size will be determined.

Note:1. First of all we need to know the which type of data you are using ( Discrete or contionus) based on the data type and the above things will be considered .

       2. Is the population is size is known or not