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2-2 example4

# 2-2 example4 - Student Grady Silnonton Instructor Shawn...

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Unformatted text preview: Student: Grady Silnonton Instructor: Shawn Parvini Date: 2/18/10 Course: Math119: Elementary Statistics - Spring 2.010 - CRN: 49239 - 16 weeks Book: Triola: Elementary Statistics, 11e Time: 11:00 AMI Construct the cumulative frequency distribution for the given data. Dail Low 3 5-39 2 40-44 3 45-49 5 50-54 13 5 5- 59 9 60-64 6 65-69 1 The cumulative frequency for a class is the sum of the frequencies for that class and all previous classes. Start by ﬁlling in the ﬁrst frequency. The cumulative frequency for the second class is the sum of the first and second frequencies. Fill in the next cumulative frequency. The cumulative frequency for the third class is the sum of the ﬁrst, second, and third ﬁ‘equencies or the sum of the second cumulative frequency and the third frequency. Fill in the next cumulative frequency. Now, continue this same procedure to ﬁll in the remaining cumulative frequencies. Dally Lostogmpemme Cumulative Frequency Less than 40 2 Less than 45 5 Less than 50 10 Less than 55 23 Less than 60 32 Less than 65 38 Less than 70 39 Page 1 ...
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