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Z TEST SCORES ACTIVITY Flashcards | StudBud

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Z TEST SCORES ACTIVITY

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Questions 5

Answers

1
The mean of a dataset is 30, and the standard deviation is 5. What is the z-score for a data point of 40?
2
3
1
0.5
2
If a data point has a z-score of 2.0, this means that:
The data point is 2 units below the mean
The data point is 2 standard deviations below the mean
The data point is 2 standard deviations above the mean
The data point is 2 units above the mean
3
Which of the following is true for a z-score of 0?
The data point is an outlier
The data point is 1 standard deviation below the mean
The data point is 1 standard deviation above the mean
The data point is exactly at the mean
4
What is the probability of a z-score being less than 1.0 in a standard normal distribution?
0.1587
0.5000
0.8413
0.9772
5
What does a z-score represent in statistics?
The value of a data point
The average value of the dataset
The total number of data points in the dataset
The number of standard deviations a data point is from the mean