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?
Mode Median Symmetrical data: Mean Sk d d M di Mean Skewed data: Median. Deviations Around th Mthe Mean. Deviations • A score’s deviation is the distance separate the score from the mean – ∑ =(X= (X –XXbarbar)) •The sum of the deviations around the mean always equals 0.
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