Exam 3: A Statistics Refresher

Which statement is TRUE regarding this distribution of scores: 1,2,2,3?

Which of the following is NOT true of the normal curve?

Approximately what percentage of scores in a normal distribution falls between the mean and 1 standard deviation above and below the mean?

In a grouped frequency distribution,test-score intervals are also referred to as

If the correlation coefficient is equal to .30,the coefficient of determination is equal to

If a distribution of scores has a few extremely low scores and no corresponding high scores,which of the following would be TRUE?

A meta-analytic study of the Asch line judgment paradigm concluded that

Which of the following is most directly associated with the process of predicting scores using regression techniques?

In summation notation,the Greek uppercase letter sigma is used to signify:

What standard score has a mean of 5 and a standard deviation of approximately 2?

What is the correlation coefficient of choice when two variables are ordinal?

Psychological assessment instruments often employ an ordinal scale because

The U.S.Navy is highly selective when it comes to applications for Navy Seal training.A distribution of test scores on a Navy Seal Qualifying and Screening Examination administered to a class of high school seniors would be expected to yield

On a bar graph comparing men to women with regard to test scores,one would expect to find the gender variable listed on the

There are 100 scores in a distribution of test scores and the average deviation (AD)is 12.The AD of 12 tells us that the 100 scores in this distribution varied,on average

What is the relationship between the mean,the median,and the mode for a distribution of scores that is normally distributed?

A student received a z score of 1 on a test of English as a Second Language and the distribution of test scores on that test was normal.This same student received a z score of 1 on another test of English as Second Language and the distribution of test scores on this second test were highly skewed.In all probability,

Which of the following is a term for the graphed representation of an extremely atypical score that can sometimes provide a hint regarding some deficiency in the testing or scoring procedures?

Graphed data details the relationship of time spent studying for a midterm examination and final grade on that test.An outlier indicates that one student spent many hours spent studying but failed the examination.This leaves the professor wondering:

Test users who treat ordinal data as if they were interval data must be constantly alert to the possibility of