The mean, median and mode are the most common measures of dispersion (spread).
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Q. 2The midrange for a set of data is found by subtracting the lowest valued data L from the highest valued data H.
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Q. 3For every set of data, the value of the median will always be one of the original items of data.
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Q. 4Measures of central tendency measure the spread of a set of data about its center.
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Q. 5Every ogive starts on the left with a cumulative relative frequency of zero at the lower class boundary of the first class and ends on the right with a cumulative relative frequency of 100 at the upper class boundary of the last class.
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Q. 6An ogive is a line graph of a cumulative frequency or cumulative relative frequency distribution.
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Q. 7The histogram of a sample should have a distribution shape very similar to that of the population from which the sample was drawn.
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