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It means that your raw score is four standard deviations below the mean. This will mean different things depending on the context of the question. If you're looking at the probability of a single score occurring in a given distribution (say, a score of 40 in a distribution of scores with a mean of 80 and a std. dev. of 10), then this means that the probability of getting a 40 is very, very low--less than .00002.

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Q: What does a z score of -4 indicate?
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If mean equals 18.6 standard deviation equals 4 what is the z score?

The z score, for a value y, is (y - 18.6)/4


What is the of z-score -1.0?

A z score is a value that is used to indicate the distance of a certain number from the mean of a normally distributed data set. A z score of -1.0 means that the number is one standard deviation below the mean. A z score of +1.0 means that the number is one standard deviation above the mean. Z scores normally range from -4.0 to +4.0. Hope this helps! =)


What does a z score of 4 mean?

zero you dubass


What does a Z-Score of 4 mean?

nobody knows


In a standard normal distribution about percent of the scores fall above a z score of 300?

A Z score of 300 is an extremely large number as the z scores very rarely fall above 4 or below -4. About 0 percent of the scores fall above a z score of 300.


How does a z-score indicate how unusual a data value is?

It shows us by telling us how far away it is from the mean.


What is the difference between Z-Test and The Z-score?

The Z-score is just the score. The Z-test uses the Z-score to compare to the critical value. That is then used to establish if the null hypothesis is refused.


What is z score of area 0.75?

what is the z score for 0.75


Calculate the z-score for a test score of 87 if the mean test score is 81.1 and standrd deviation is 11.06?

z score = (test score - mean score)/SD z score = (87-81.1)/11.06z score = 5.9/11.06z score = .533You can use a z-score chart to calculate the probability from there.


Can z score be possible 5?

Yes a Z score can be 5.


What does it mean if the Z score of a test is equal to 0?

If the Z Score of a test is equal to zero then the raw score of the test is equal to the mean. Z Score = (Raw Score - Mean Score) / Standard Deviation


What is the z score that correspond to P18?

Find the Z score that correspond to P25