If the frequency of any score is zero, it should not be listed in a frequency distribution.
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In constructing a frequency distribution of grouped scores, i should be rounded to one more decimal place than in the raw scores.
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A bell shaped curve is an example of a skewed distribution.
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If a curve is negatively skewed, most of the scores occur at the higher values and the curve tails off toward the lower end of the horizontal axis.
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A frequency polygon results in a curve that looks as though the scores were continuously distributed.
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A histogram is like a bar graph except with a histogram the bars don't touch each other.
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The percentile point for a distribution of scores must have a value equal to one of the scores.
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In constructing a frequency distribution of grouped scores, the intervals must be continuous and mutually exclusive.
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In grouping scores, the wider the intervals, the more information that is lost.
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A distribution which has a predominance of scores at the lower values of the distribution and which tails off at the higher end is _______.
a. positively skewed c. normally distributed
b. negatively skewed d. symmetrical
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