What is the primary purpose of a z-score?

Understanding Z-Scores and Performance Evaluation

Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Hard

Thomas White
FREE Resource
Read more
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To measure the absolute value of a score
To standardize a score by showing its distance from the mean
To calculate the average of a data set
To determine the median of a data set
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why might a raw score be misleading when evaluating performance?
Raw scores are always accurate
Raw scores do not account for the difficulty of the test
Raw scores are the same as z-scores
Raw scores are always below the mean
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for calculating a z-score?
Z = (X - mean) * standard deviation
Z = (X + mean) / standard deviation
Z = (mean - X) / standard deviation
Z = (X - mean) / standard deviation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mean of a standard normal distribution?
-1
2
1
0
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the empirical rule, what percentage of data falls within one standard deviation of the mean?
99.7%
95%
50%
68%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example given, how did Emily's performance in English compare to her cohort?
She performed better than average
She performed exactly at the average
Her performance was not compared
She performed worse than average
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is one key takeaway about z-scores from the video?
Z-scores are always positive
Z-scores are not related to standard deviations
Z-scores help in comparing different data sets
Z-scores are only useful for math exams
Similar Resources on Wayground
9 questions
Understanding Normal Distribution Concepts

Interactive video
•
9th - 10th Grade
9 questions
Standard Normal Distribution Concepts

Interactive video
•
9th - 10th Grade
7 questions
Normal Distribution Concepts and Applications

Interactive video
•
9th - 10th Grade
4 questions
R Programming for Statistics and Data Science - Distributions

Interactive video
•
9th - 10th Grade
11 questions
Understanding Z-Scores and IQ Scores

Interactive video
•
9th - 10th Grade
2 questions
Test Statistics - Crash Course Statistics

Interactive video
•
9th - 10th Grade
6 questions
Expected Value and Variance Concepts

Interactive video
•
9th - 10th Grade
11 questions
Normal Distribution and Probability Concepts

Interactive video
•
9th - 10th Grade
Popular Resources on Wayground
25 questions
Equations of Circles

Quiz
•
10th - 11th Grade
30 questions
Week 5 Memory Builder 1 (Multiplication and Division Facts)

Quiz
•
9th Grade
33 questions
Unit 3 Summative - Summer School: Immune System

Quiz
•
10th Grade
10 questions
Writing and Identifying Ratios Practice

Quiz
•
5th - 6th Grade
36 questions
Prime and Composite Numbers

Quiz
•
5th Grade
14 questions
Exterior and Interior angles of Polygons

Quiz
•
8th Grade
37 questions
Camp Re-cap Week 1 (no regression)

Quiz
•
9th - 12th Grade
46 questions
Biology Semester 1 Review

Quiz
•
10th Grade