kin 232- mod 8 the normal curve and z scores

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15 Terms

1
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z score
the distance a raw score from the mean and is relative to the SD
2
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normal distribution
the distribution of many variables
3
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normal curve
the distribution of sample means
4
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true
the normal curve allows determination of relative frequencies and probabilities

t or f
5
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false
the normal curve is not symmetrical about the mean

t or f
6
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true
the area under the normal curve is a proportion or a relative frequency

t or f
7
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true
the normal curve is defined by the SD and the mean

t or f
8
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taller
a smaller standard deviation causes the curve to be _________
9
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wider
a larger standard deviation causes the curve to be ________
10
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standard/z scores
helps compare and interpret scores from any normal distribution of interval/ratio data
11
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true
all normal curves can be expressed in standardized terms

t or f
12
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false
a z score is not based on the mean and SD of a distribution

t or f
13
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0
the mean score has z score = ___
14
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\+ve
a z score above the mean is
15
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\-ve
a z score below the mean is

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