Statistics Test
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| A. distance between highest and lowest scores in distribution (high score-low score)B. 10%C. least squares principleD. mean is pt around which variation of score is minimized; if difference b/t scores and mean are squared and then added, the resultant sum will be less than the sum of the squared differences b/t the scores and any other point in the distributionE. the distance from the third to 1st quartile; a kind of range that acoids some of the problems associated with range outliers by considering only the middle 50% of the cases in distributionF. 0G. above 75% of the scoresH. it will skew to the right (+) = (mean>median)I. 1. the mean balances out all scores (mean is pt around which all scores cancel out); 2. mean minimizes variation of scores (least squares principle); 3. mean affected by all scores and can be misleading if distribution has extreme outliersJ. medianK. it will skew to the L (-) = mean< medianL. percentileM. should use all the scores in the dist; should describe the average or typical deviation of the scores; increase in value as the scores become more diverseN. the sum of all data pointsO. skewed to the left (- skew)P. skewQ. mode, median, and meanR. outliers (extreme values) skew the meanS. symmetricalT. the sum of (xi) / N |
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aereal