3_Cent_Tend

3_Cent_Tend - CentralTendency Variableshavedistributions A...

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    Central Tendency
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    Variables have distributions A variable is something that changes or has different values (e.g., anger). A distribution is a collection of measures, usually across people. Distributions of numbers can be summarized with numbers (called statistics or parameters).
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    Central Tendency refers to the Middle of  the Distribution
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    Middle of the Distribution Mode Most common score Median Top from bottom 50 percent Mean Arithmetic mean or average (Common Statistics)
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    Mode The most frequently occurring score. Can have bimodal and multimodal distributions. Modal psychology student is female. Modal number of pubs from grad school is zero. π
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    Median Score that separates top 50% from bottom 50% Even number of scores, median is half way between two middle scores. 1 2 3 4 | 5 6 7 8 – Median is 4.5 Odd number of scores, median is the middle number 1 2 3 4 5 6 7 – Median is 4
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    Mean
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3_Cent_Tend - CentralTendency Variableshavedistributions A...

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