0
If a random variable (RV) X is distributed Normally with mean m and standard deviation sthen
Z = (X - m)/s is the corresponding Normal variable which is distributed with mean 0 and variance 1. The distribution of X is difficult to compute but that for Z is readily available. It can be used to find the probabilities of the RV lying in different domains and thereby for testing hypotheses.
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What is the value of a 'z' score of 0?
A z-score of 0 means the value is the mean.
What is the value of 8Z equals 64?
Z=²8² = 8x8 = 64the value of z = 8
What the value of 10Z when the value of z is 0.4?
4
What is the z value of a mean of 516 hours and a standard deviation of 20 hours?
The Z Value, or Z Score, does not apply to the mean, it is a representation of a piece of data. z = (x-µ)/sigma
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.
