10/04/24

Standard Deviation

Suppose a normally distributed set of data has a mean of 104 and a standard deviation of 19. Use the 68-95-99.7 Rule to determine the percent of scores in the data set expected to be below a score... more

08/28/24

When to use a z score versus a t score ?

How do I determine whether to use a z score versus a t score ?

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