A distribution of standardized test scores has a standard deviation of 4. What is the position of a test score with a z-score of 1.5? 5.5 1.5 points above the mean both a and b 6 points above the mean
Added by Jamie W.
Close
Step 1
Step 1: The z-score is the number of standard deviations a data point is from the mean. Show more…
Show all steps
Your feedback will help us improve your experience
Pritesh Ranjan and 72 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
The test scores of a large group of students are normally distributed with a mean of 80 and a standard deviation of 10. (a) A student scores 85 on the test. What is their Z-score? (b) Another student has a Z-score of 1.5. What was their test score? (c) Explain what it means if a student has a Z-score of 0.
Lucas F.
If Mr. Kurz has created a Normal model to describe student scores in Math 134 and then tells you that you have a standardized score of +1.5, this means that you: have a score that is 1.5 times the average for the class are 1.5 standard deviations above average for the class are 1.5 points above average for the class have a standard deviation of 1.5
Madhur L.
In a distribution of 150 test scores, the mean grade was an 82 and the standard deviation was 8. If a student scored a 93, what would their equivalent Z score be? a. 1.13 b. -1.38 c. 0.68 d. 1.38
Ahmet Y.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD