Transcription of CENTRAL TENDENCY: Mean, Median, Mode
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CENTRAL TENDENCY: Mean, Median, Mode
CENTRALCENTRAL TENDENCY: TENDENCY: Mean, Median, ModeNew Statistical Notation :sigma : sigma The symbol means to sum (add) the scoresCentral TendencyWhat Is CENTRAL Tendency? A score that indicates where the centerof the distribution tendsto be located. Tells us about the shape and nature of the of CENTRAL Tendency Mode Median Median MeanThe Mode The most frequently occurring score. Typically useful in describing CENTRAL Typically useful in describing CENTRAL tendency when the scores reflect a nominal lfscaleof Mode It does not make sense to take the average in nominal data. Gender: 67 males --- 150 females ---- 2141413151115131012131413141517141415Sf1 7 What is the mode?1 Scoref171615 What is the mode?104151413464131211411111011N=18 Unimodal DistributionsWhlhWhen a polygon has one hump (such as on the normal curve) the distribution is called is the mode?
Central Tendency • Measures of Central Tendency: – Mean • The sum of all scores divided by the number of scores. – Median • The score in the middle when the scores are ordered. – Mode • The most frequent score.
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