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# Basic Statistical Analysis

Statistics

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## Quiz 4 : The Normal Curve and Z Score

When a z score falls to the left of the mean
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A

The normal curve is
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D

Under the normal curve
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D

If an IQ distribution is normal and has a mean of 100 and a standard deviation of 15, then 99% of all those taking the test scored between IQ's of
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When more than 34% of the cases under the curve fall between the mean and a z score of + 1, then
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Under the normal curve, the percentage of cases falling above a z score of + 3, is
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Under the normal curve, when the z score is equal to + 1, then
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The normal curve is
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Under the normal curve the 50th percentile always falls at the
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Under the normal curve, if the mean of the distribution of raw scores is equal to 68, then its equivalent z score is equal to
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When the normal curve is plotted according to standard deviation units, each having a value of 1.00, it is called
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A normal curve always has
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If an IQ distribution is normal and has a mean of 100 and a standard deviation of 15, then 68% of all those taking the test scored between IQ's of
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Under the normal curve, between the z scores of + 1 and + 2, there are always
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Under the normal curve, 68% of the cases must always fall
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Under the normal curve, between z scores of + 10, there are always
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The creation of the normal curve concept is popularly credited to
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A bimodal distribution may never be
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Under the normal curve, 50% of the cases must always fall
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When the mean and median do not coincide, then
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