Statistics Exam #2 Review

Do the tails of the standard normal distribution ever touch the x-axis?

What level of measurement is needed to calculate the range?

The proportion of cases of a variable that are not in the modal value?

What does a z score measure?

Once you find a z score, how do you find the corresponding probability?

What are the properties of the Standard Normal Distribution?

What level of measurement represent categories or qualities of a case only?

What level of measurement is required to calculate a standard deviation?

What statistics allow you to make assertions from a random sample about the population?

The probability of an event NOT occurring is what?

What is the probability of one event occurring (A) given that another event has occurred (B)?

When doing confidence intervals, what distribution is used with a large sample?

Why do you use degrees of freedom on the t distribution?

What rule says that the probability of an event can never be less than 0 or greater than 1?

Calculated as the difference between the highest score and the lowest.

Are confidence intervals one- or two-tailed?

What is the term used to describe the ratio of two probabilities: The probability of A over the complement of A?

W.E. Gosset created the t-distribution in 1908. What brewery did he work for?