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Statistics 2.1 with notes.docx - Section 2.1 Frequency...

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Section 2.1Frequency DistributionsIQ Scores of 30 Adults – Continuous SampleRaw Data:988580961061129411474122102115869889104889810086971021141049610611197126105Begin with a lower limit of 70 and use a class width of 10 to construct a frequency distributionfor the data.Class Width is 10 and there are 6 classes (scores) – bell shaped distributionScoresFrequencyRelativeFrequencyMidpoints70-7913.3%74.580-89620%84.590-99826.7%94.5100-109826.7%104.5110-119516.7%114.5120-12926.7%124.5
Lower Class Limitsare the smallest numbers that can actually belong to different classesUpper Class Limitsare the largest numbers that can actually belong to different classes
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Harshad number, Frequency distribution, class width, 3 3, 74 5 6 20, 84 5 8 26 7

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