
Z scores
Quiz by Deanna Triplett
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9 questions
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- Q1What is a z score?The average of all the data points in a sample or population.The maximum value in a set of data points.A standardized score that indicates how many standard deviations an observation or data point is from the mean.The minimum value in a set of data points.30s
- Q2In a normal distribution, what is the z score of the mean?301230s
- Q3What is the formula for calculating a z score?z = (μ - x) / σz = (x - σ) / μz = (x - μ) / σz = (σ - x) / μ30s
- Q4What does a positive z score indicate?The data point is equal to the mean.The data point is above the mean.The data point is below the mean.The data point is an outlier.30s
- Q5What does a negative z score indicate?The data point is below the mean.The data point is an outlier.The data point is above the mean.The data point is equal to the mean.30s
- Q6What is the z score of a data point that is equal to the mean?203130s
- Q7What is the z score of a data point that is one standard deviation above the mean?-110230s
- Q8What is the z score of a data point that is two standard deviations below the mean?02-2-130s
- Q9What is the z score of a data point that is three standard deviations above the mean?310230s