Question: TATISTICAL GUIDEThe range is the difference between the highest and the lowest scores in aset of scores. (Some statisticians add 1 to the difference.) Sometimesresearchers

TATISTICAL GUIDEThe range is the difference between the highest and the lowest scores in aset of scores. (Some statisticians add "1" to the difference.) Sometimesresearchers merely report the highest and lowest values (withoutsubtracting) and refer to the two values as the range. Other times, a singlenumber is reported for the range, and in this case, the single number is thedifference between the highest and lowest score.The range is one indicator of how dispersed or spread out a set of scores is.Therangeisimportantbecauseitgetsattheideaof variation or variability in a distributionone of the key features of adistribution. If the range is small, the variation is small and vice versa.By the way, the terms variation, spread, and dispersion are often usedinterchangeably. They all point towards a central ideathe amount ofdifference in the scores, one from another, in a distribution. The range is the

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