A test for normal distribution compares various statistics of the data to determine if the data follows a normal distribution. You can perform several test for ...

A 95% confidence interval means – 95% of the standard normal distribution lies between an interval bounded by two Z scores. To calculate Z score 95% confidence ...

The Fisher test evaluates any significant association between two categorical variables. We can perform the Fisher test in Excel using the HYPGEOM.DIST ...

The Z score indicates how many standard deviations a data point is located from the mean value of the dataset. You can use an Excel function or a simple ...

The Z critical value is the boundary value that determines whether a sample data point is statistically significant in the population. It defines the rejection ...