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21 Cards in this Set
- Front
- Back
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the z-score is also called a
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standard normal deviate
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what is the total cumulative relative frequency (or area) under a normal distribution
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1 or 1.0
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the normal distribution is a theoretical mathematical distribution that specifies a ____frequency distribution of all scores from a ____
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relative , population
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outcomes that cannot occur at the same time are ____ ____
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mutually exclusive
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what proportion of scores in a normal distribution lie between one standard deviation above and one standard deviation below the mean ?
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68.2 %
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what is a number that characterizes a population
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parameter
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the ____probability distribution is created by counting actual occurrences of events
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empirical
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what is the value of a z score which is one standard deviation above the mean
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+1
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on the normal distribution table column shows the ___ of scores between the z-scores and the mean
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proportion
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one property of a discrete probability distribution is that the probability of any even must be between ___ and __
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0 and 1
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the mean of the standard normal distribution is u =
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0
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a standard score may be computed on sample data using the ___ ___ instead of the population u
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sample mean
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how many standard deviations above the mean is a z-score of +2.05
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2.05
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the standard deviation of the standard normal distribution is o
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1
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the probability of an event is defined as the number of outcomes that make up the event divided by the total number of ___outcomes
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possible
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asymptotic normal distribution
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the tails never reach the X axis
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symmetrical normal distribution
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the mean mdn and mode are equal
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continuous
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for any two scores a score can be found between them
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by transforming a raw score into a z-score we can locate that score in terms of how many ___ ___ it is away from the mean
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standard deviations
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to use the standard normal distribution a raw score must be converted to a ___ score
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z
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one property of a discrete probability distribution is that the probabilities of all events must ass to __-
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1
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