exam 2 descriptive stats
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Last updated 4:21 AM on 10/29/25
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11 Terms
1
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measures of central tendency
mean, median, mode
2
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mean
average
3
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median
middle
4
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mode
most
5
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measures of variability
range
IQR
variance
standard deviation
6
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measures of relative standing
percentiles
7
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what is the percentile for a given data value
8
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what is the corresponding data value for a given percentile
c = (n x k) / 100
9
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c = (n x k) / 100
where n = sample size
k = percentile
c = position when data values are sorted in rank order
Note: if C is not a whole number round up, if C is a whole number take average of C and C +1
10
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5 number summary
min, max, q1, q2, q3
11
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IQR on box plot
how wide the box is depends on the largest IQR
Note 
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