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stats - descriptive stats
PA School
6
Other
Graduate
04/08/2010

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Cards

Term
3 types of data distribution:
Definition
1. symmetric
2. skewed
3. modal distribution (unimodal,bimodal)
Term
measures of central tendency: define disadvantage:
Definition
extreme values influencing the mean making it no longer a true measure of central tendency
Term
value in data that occurs most frequently:
Definition
mode
Term
avg of the diff btwn scores and the mean:
Definition
variance
Term
what is = to the square root of the variance?
Definition
SD
Term
what is the SD of: 1,5,9?
Definition
mean = 5
5-1=4squared=16
5-5=0
9-5=4squared=16

16+0+16=32/3=3.266SD
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