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What else can I help you with?
What is the difference between standard deviation and mean?
The mean is the average value and the standard deviation is the variation from the mean value.
What does a z-score of -1.5 mean?
z-score of a value=(that value minus the mean)/(standard deviation). So a z-score of -1.5 means that a value is 1.5 standard deviations below the mean.
Is the expected value the same as the standard deviation?
No. The expected value is the mean!
What does denominator of z-score measure?
The standard deviation.z-score of a value=(that value minus the mean)/(standard deviation)
Can The standard deviation of a distribution be a negative value?
No. The standard deviation is not exactly a value but rather how far a score deviates from the mean.
What does a negative z-score mean?
z-score of a value=(that value minus the mean)/(standard deviation). So if a value has a negative z-score, then it is below the mean.
What does the standard error mean?
For a sample of data it is a measure of the spread of the observations about their mean value.
How do you find out the z-score?
z-score of a value=(that value minus the mean)/(standard deviation)
What is meant by a z-score?
z-score of a value=(that value minus the mean)/(standard deviation)
How is the z-score depicted?
z-score of a value=(that value minus the mean)/(standard deviation)
What is the average distance of each data value from the mean?
The standard deviation.
What is a T score in standardized testing?
T scores are also standardized norm scores, where the mean value is 50 and standard deviation value is 10, in contrast to Z scores where mean value is "0" and standard deviation value is 1. -Rama Reddy Karri
