chap12 - Descriptivestatisticsand Correlationcoefficients...

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    Descriptive statistics and  Correlation coefficients
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    Percentages Do you want to expand child care  services on campus? 25 of 50 males want more services  (50% of males) 60 of 80 females want more services  (75% of females) Compare on gender: 50 versus 75%
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    Means Males and females completed the family  satisfaction scale The average score of males was 4.08  on the 10-point scale The average score of females was 6.12 Compare the means of the two groups
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    Frequency Distribution First step for understanding data How many people received each  possible ‘score” Percentage of males versus females Number of people who received each  score on an exam
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    Central Tendency Mode – simplest indicator, the most  frequent score Median – the middle score in a  distribution, very useful if scores are  skewed in one direction Mean – arithmetic average dividing the  sum by the number of scores
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This note was uploaded on 10/08/2010 for the course PSY 3001w taught by Professor Stellmack during the Fall '10 term at Minnesota.

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chap12 - Descriptivestatisticsand Correlationcoefficients...

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