Sampling and Statistics 5

# Sampling and Statistics 5 - median Mean=arithmetic sum of...

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Research Methods Sampling and Statistics Lecture Material by Laurel Tranynowicz Measures of Central Tendency Mode = most frequently occurring value Advantages: o The mode is one of several measures of central tendency that statisticians used to indicate the point (or points) on the scale of measures where the population is centered. o It is the score in the population that occurs most frequently. Median=50 th percentile, or that point at which exactly 50% of the score values are above or below Advantages: o Used to indicate the point on the scale of measures where the population is centered. o The median of a population is the point that divides the distribution of scores in half. o Numerically, half of the scores in a population will have values that are equal to or larger o than the median and half will have values that are equal to or smaller than the

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Unformatted text preview: median. Mean=arithmetic sum of scores in distribution divided by the number of scores Advantages: o To indicate the point on the scale of measures where the population is centered. o The mean is the average of the scales in the population. o Numerically it equals the sum of the scores divided by the number of scores. o It is of interest that the mean is the one value which, if substituted for every population o would yield the same sum as the original scores, and hence it would yield the same mean. Relationship between measures of central tendency Normal curve: Mean, mode, and median all the same score Skewed: Mode=peak of distribution Median=in middle Mean=closest to tail of distribution...
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Sampling and Statistics 5 - median Mean=arithmetic sum of...

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