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Philosphy week 4

# Philosphy week 4 - Central Tendency Median is used to...

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Bar graphs and pie charts work well with nominal and ordinal variables. 1) Score variables are continuous, so HISTOGRAMS are used. This is done by bins and tabulating the number of items in each bin The size of bins can create radically different pictures of the distribution. Normal distributions, Have a single peak, scores equally distributed around the peak fewer scores around the peak Central tendency : Mean the arithmetic average Median: the score of which half are higher and half are lower. Mode: the most frequent score

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Unformatted text preview: Central Tendency : Median is used to measure. 2) Variability. a) The lowest value to the highest value 3) Variance. 4) Standard Deviation: a) One standard deviation: the part of the range in which 68% of the scores fall b) Two standard deviation: the part of the range in which 95% of the scores fall c) Three standard deviations: the part of the range in which 99% scores fall 5) Randomization: attempt to insure that the sample is representative by avoiding bias in selecting the sample 6)...
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Philosphy week 4 - Central Tendency Median is used to...

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