When you subtract the value of the mean from each score in a distribution and then add the results, the sum will be (Hint: calculating standard deviation) 

An advantage of the interquartile range (Q) over the range (R) is that it

If the variance of a distribution is 16, the mean is 12, and the number of cases is 24, the standard deviation is

The possible values for a standardized score (z score) can be any number: positive, negative, or 0  

In a ranked list of 25 scores, the median is the score of

A distribution of the number of delinquent acts is highly skewed. Which measure of central tendency would you recommend for the purpose of characterizing delinquent acts? 

Which one of these statistics is unaffected by outliers?  

The mean hours of sleep that students get per night is 7 hours, the standard deviation of hours of sleep is 1.7 hours, and the distribution is approximately normal. Complete the following sentence. For about 68% of students, nightly amount of sleep is between ____

What is the level of measurement for the following variable? Suspect’s race measured as White, Black, Latino, and Other ________

Which of the following is an impossible value for a percentage?