PSYC 2F23 Final: FREQUENCY DISTRIBUTION OF GROUPED SCORES (1)
4 Jan 2016
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Highest score minus lowest score: interval width (i) (p. 51) raw scores. When i is a decimal, round it to the same number of decimal places in the: intervals (p. 51) Determine the lower limit of the lowest score. The lower limit must be evenly divisible by i". If the lower is not divisible by i" then the lower limit is the next lower value divisible by i": tally the scores (p. 51) Tally scores into the appropriate class intervals: convert the tallies into frequencies by adding up the number of scores in each class interval. Relative frequency (p. 55): the proportion of the total number of scores that occurs in each interval. Found by dividing the frequency of each interval by the total number of scores. Cumulative frequency (p. 55): the number of scores that fall below the upper real limit of each interval.
