Exam 5: Z-Scores and Other Standard Scores

A set of scores has a mean of 58.23 and a standard deviation of 3.12. Lilly scored -.83 standard deviations below the mean and Karina scored 1.53 standard deviations above the mean. a. What was Lilly's raw score? b. What was Karina's raw score?

A set of scores has a mean of 75. Jiang's score of 60 converted to a z-score of -1.5. What was the standard deviation of the distribution?

Which of the following z-scores is closest to the mean?

Olivia's score was 75 on both her government and history exams. The class mean for the government exam was 80 with a standard deviation of 5. The class mean for the history exam was 70 with a standard deviation of 4. Calculate Olivia's z-scores. On which exam did she perform better?

An exam has a mean of 75 and a standard deviation of 8. What exam score is 1.5 standard deviations above the mean?

The WAIS has a mean of 100 and a standard deviation of 15. One of the requirements to become a member of MENSA, an organization for smart people, is to score a minimum of two standard deviations above the mean on this test. What is the minimum score requirement?

If a person has a z-score of -2.00, this would mean that they

You scored at the mean on your statistics exam. What is your z-score?

A distribution has a mean of 100 and a standard deviation of 10. Sarah has a z-score of -2.00. What is her raw score?

A set of scores has a mean of 36 and a standard deviation of 6. Karim's z-score was -1.50. What was his raw score?

Amar's raw score of 80 converted to a standard score of +1.63. In terms of location in the distribution,

A distribution has a mean of 36 and a standard deviation of 2.5. Jeremy scored 32. What is his z-score?

Hans scored 16 points above the mean with a z-score of +2.00. What was the standard deviation for the distribution?

As a part of learning how to administer various tests, students taking a course in psychological measurement were administered the Wechsler IQ test. The mean for the course was 106 and the standard deviation was 11. The scores are listed below for three students. What are their equivalent standardized Wechsler IQ scores? a. Student One: X = 98 b. Student Two: X = 108 c. Student Three: X = 110

The mean of a z-score distribution is _________ and the standard deviation is __________.

If a person earned 98 points on an exam, you can be certain that

If someone obtains a z-score close to 0, that would indicate that

Isabelle scored 98 on an exam and her z-score was +3.00. Isaac scored 80 on the same exam and his z-score was -3.00. What was the mean of the exam?

The average weight of a popular brand of snack crackers is 12.4 ounces with a standard deviation of .3 ounce. The box you purchase weighs 12.8 ounces. What is the z-score for your box of crackers?

The standard deviation of a z-score distribution is