by scarlett.watsica
The standard normal curve, a fundamental concept in statistics, represents a perfectly symmetrical distribution of data around the mean. Understanding this curve is crucial for interpreting data and making informed decisions. This quiz will challenge your grasp of the standard normal curve’s properties, calculations, and real-world applications. Dive in and see how well you comprehend this essential statistical tool!
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Standard Normal Curve Quiz Questions Overview
1. What is the mean of a standard normal distribution?
0
1
2
3
2. What is the standard deviation of a standard normal distribution?
0
1
2
3
3. What percentage of data falls within one standard deviation of the mean in a standard normal distribution?
50%
68%
95%
99.7%
4. In a standard normal distribution, what is the z-score corresponding to the 95th percentile?
1.28
1.64
1.96
2.33
5. What is the area under the standard normal curve?
0.5
1
1.5
2
6. What is the shape of the standard normal distribution?
Skewed left
Skewed right
Bimodal
Bell-shaped
7. Which of the following is true about the tails of the standard normal distribution?
They are finite
They are infinite
They are skewed
They are bimodal
8. What is the probability of a z-score being exactly 0 in a standard normal distribution?
0
0.5
1
Undefined
9. What is the probability of a z-score being less than 0 in a standard normal distribution?
0.25
0.5
0.75
1
10. What is the z-score for a value that is 2 standard deviations above the mean in a standard normal distribution?
0
1
2
3
11. What is the cumulative probability for a z-score of 1 in a standard normal distribution?
0.1587
0.5
0.8413
0.9772
12. What is the probability of a z-score being greater than 2 in a standard normal distribution?
0.0228
0.1587
0.5
0.9772
13. What is the z-score for a value that is 1 standard deviation below the mean in a standard normal distribution?
-1
0
1
2
14. What is the probability of a z-score being between -1 and 1 in a standard normal distribution?
0.68
0.95
0.99
1
15. What is the z-score for a value that is 3 standard deviations above the mean in a standard normal distribution?
0
1
2
3
16. What is the probability of a z-score being less than -2 in a standard normal distribution?
0.0228
0.1587
0.5
0.9772
17. What is the cumulative probability for a z-score of -1 in a standard normal distribution?
0.1587
0.5
0.8413
0.9772
18. What is the probability of a z-score being greater than 1 in a standard normal distribution?
0.1587
0.5
0.8413
0.9772
19. What is the probability of a z-score being between -2 and 2 in a standard normal distribution?
0.68
0.95
0.99
1
20. What is the z-score for a value that is 2 standard deviations below the mean in a standard normal distribution?
-2
0
2
3
We recommend that you do not leave the page that you are taking this quiz in. Stay honest 🙂
