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Question
what measures the distance of the data value from the mean? standard deviation variance range z - score
Brief Explanations
- Standard deviation: Measures the dispersion of data from the mean but not the distance of a single data value.
- Variance: Is the square of the standard deviation, also a measure of dispersion, not a single - data - value - to - mean distance.
- Range: Is the difference between the maximum and minimum values in a data set, not related to the mean.
- Z - score: The formula for the z - score of a data value \(x\) is \(z=\frac{x - \mu}{\sigma}\), where \(\mu\) is the mean and \(\sigma\) is the standard deviation. It directly measures how many standard deviations a data value \(x\) is away from the mean \(\mu\), which is the distance of the data value from the mean in terms of standard deviation units.
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Z - score