STATS Z-SCORES QUESTIONS WITH ACCURATE ANSWERS

STATS Z-SCORES QUESTIONS
WITH ACCURATE ANSWERS
A population has μ = 50. What value of σ would make X = 55 an extreme score in
this population? correct answer σ = 1


A population with μ = 100 and σ = 20 is transformed into z-scores. The resulting
distribution of z-scores will have a mean of zero. correct answer True


A population with μ = 37 and σ = 6 is standardized to create a new distribution
with μ = 100 and σ = 10. In this transformation, a score of X = 40 from the original
distribution will be transformed into a score of X = 110. correct answer False


A set of score has a mean of μ = 63 and a standard deviation of σ = 8. If these
scores are standardized so that the new distribution has μ = 50 and σ = 10, what
new value would be obtained for a score of X = 59 from the original distribution?
correct answer 45


A z-score of z = -2.00 indicates a position correct answer below the mean by 2
times the standard deviation


A z-score of z = +2.00 indicates a position located exactly two standard deviations
above the mean. correct answer True


Any score with a value less than the population mean will have a negative z-score.
correct answer True