Asked by abdullah alharbi on Apr 28, 2024
Verified
Although their formulas are similar, one difference between a z-score (z) and a t-statistic (t) is that a z-score evaluates ______ but a t-statistic evaluates ______.
A) sample means; individual scores for a variable
B) individual scores for a variable; sample means
C) scores; probabilities
D) normal distributions; skewed distributions
T-statistic
A value derived from the t-test, used to determine if there is a significant difference between the means of two groups being compared.
Z-score
A statistical measurement of a score's relationship to the mean in a group of scores.
- Understand the differences between z-scores and t-statistics.
Verified Answer
ZK
Zybrea KnightMay 04, 2024
Final Answer :
B
Explanation :
A z-score is calculated using the population standard deviation and mean, whereas a t-statistic is calculated using the sample standard deviation and mean. Therefore, a z-score evaluates individual scores for a variable, while a t-statistic evaluates sample means.
Learning Objectives
- Understand the differences between z-scores and t-statistics.