An Excel file has been created that will help you build a 95% confidence interval for the true mean of a population. Instructions for adjusting it to multiple data sets are included in the file itself. Click here to download this file. (You might need to right-click or Control-click to download.)

An Excel file has been created that will help you build a 95% confidence interval for the difference between the true means of two independent populations. Click here to download this file. (You might need to right-click or Control-click to download.)

An Excel file has been created that will help you build a 95% confidence interval for the true proportion of some kind of binomial experiment. (i.e. An experiment where the data is either Yes or No, True or False, etc. We call the main category of interest the Success category.) Instructions for adjusting it to multiple data sets are included in the file itself. Click here to download this file. (You might need to right-click or Control-click to download.)

An Excel file has been created that will help you find the correlation coefficient and line of regression (best-fitting line) for a list of paired data. Click here to download this file. (You might need to right-click or Control-click to download.)

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