## Practice Problems: Standard Scores

For the numbers below find the area between the mean and the z.
 a. z = 1.17 b. z = -.85 c. z = 2.07 d. z = -1.37

Answer

For the numbers below find the percentile rank (the % of individuals scoring below).
 a. z = 2.24 b. z = -1.65 c. z = 1.47 d. z = -.47
Answer

For the numbers below find the percent of cases falling above the z.
 a. z = .24 b. z = -1.11 c. z = 1.22 d. z = -2.07
Answer

For the numbers below find percent of cases falling between the two z-scores.
 a. z = -.38 & z = 1.63 b. z = .88 & z = 1.55 c. z = -1.93 & z = 1.09 d. z = -2.22 & z = - 1.34
Answer

A patient recently diagnosed with Alzheimer's disease takes a cognitve abilities test. The patient scores a 45 on the test (mean = 52, standard deviation of 5. What is this patient's percentile rank?

Answer

Another patient with Parkinson's disease takes the same cognitive abilities test as in the question above and scores an 54. What percent of individuals would receive higher score?

Answer

A fifth grader takes a standardized achievement test (mean = 125, S = 15) and scores a 148. What is this child's percentile rank?

Answer

8. Pat and Chris both took a spatial abilities test (mean = 80, S = 8). Pat scored a 76 and Chris scored a 94. What percent a individuals would score between Pat and Chris?

Answer

Back to Statistics Page