# Stat chapter 3

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1. Boxplot
A graphic representation of the distribution of scores on a variable that includes the range, the median, and the interquartile range.
2. Interquartile range (IQR)
The difference between the 75th percentile and 25th percentile scores in a distribution.
3. Range
The difference between the largest score and the smallest score of a distribution.
4. Squared deviation
The difference between an individual score in a distribution and the mean for the distribution, squared.
5. Standard deviation
The average deviation between the individual scores in the distribution and the mean for the distribution
6. Sum of squared deviations, sum of squares
The sum of each squared deviation for all of the cases in the sample.
7. Variance
The sum of the squared deviation divided by the number of cases in the population, or by the number of cases minus one in the sample.
8. s 2
The sample variance
9. s
the sample standard deviation
10. σ
the population standard deviation
11. σ2
the population variance
12. SS
The sum of squares, or sum of squared deviations
 Author: maryfae ID: 292904 Card Set: Stat chapter 3 Updated: 2015-01-13 19:45:38 Tags: stat Folders: statistics Description: chapter 3 Show Answers: