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Quiz 08.06 | Normal Distribution – Question 4

Quiz 08.06 | Normal Distribution – Question 4

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Question 1 of 4

1. Question
If a data point in a normal distribution has a Z-score of -2, what does this mean?
- 1. a) The data point is 2 standard deviations below the mean
- 2. b) The data point is 2 standard deviations above the mean
- 3. c) The data point is the mean of the distribution
- 4. d) The data point is 2 units below the mean
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Question 2 of 4

2. Question
If we know that a dataset follows a normal distribution, what percentage of data falls within 1 standard deviation of the mean?
- 1. a) Approximately 68%
- 2. b) Approximately 95%
- 3. c) Approximately 99.7%
- 4. d) Approximately 50%
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Question 3 of 4

3. Question
If a normal distribution has a mean of 50 and a standard deviation of 5, what is the Z-score for a data point that is 60?
- 1. a) 1
- 2. b) 2
- 3. c) 10
- 4. d) 0
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Question 4 of 4

4. Question
In a standard unit normal table, what does a Z-score of 0 correspond to in terms of percentile?
- 1. a) 50th percentile
- 2. b) 0th percentile
- 3. c) 100th percentile
- 4. d) 25th percentile
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