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Earn +20 ptsQ: What is the standardized z score for an observation?
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What is measured by the sign of a z-score?
The sign of the z score is negative if the observation was below the mean and positive if it was greater.
What does a higher z-score tell you about a specific data entry?
A high z-score indicates an observation that is further away from the mean. This indicates that either the observation is less probable or that assumptions about the distribution are wrong.
What is the z-score for a value of 125?
The z-score for an observation (or a set of them) can only be calculated if the mean and standard deviation are known. Neither of them are given in this question.
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.
Another name for a standardized value of an observation in a normal distribution?
zscore
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