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Week 3 Notes

by: Sonia Sotomayor

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Some notes on Central Tendency
Elementary Statistics
Dr. Glenn Miller
Class Notes
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This 1 page Class Notes was uploaded by Sonia Sotomayor on Friday August 5, 2016. The Class Notes belongs to at 1 MDSS-SGSLM-Langley AFB Advanced Education in General Dentistry 12 Months taught by Dr. Glenn Miller in Fall 2016. Since its upload, it has received 6 views.


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Date Created: 08/05/16
Sonia Sotomayor Dr. Miller MAT 117 Summer II 15 July 2016 Measures of Central Tendency Homework 1. Mean = ∑x ÷ number of data Median = Arrange data from least to greatest Mean = $2,000,000 ÷ 7 Median = Choose middlemost number in set Mean ≈ $285,714.3 Median = $200,000 Mode = Home sale that occurred most often Mode = $275,000  The $800,000 home sale is considered an outlier, so we would like to have a better measure of  tendency. The median is the most preferable measure of center because the data is skewed. The mode isn’t very useful because the data is continuous in this sample.  2. Mean = ∑ xf ÷ ∑f Median = n + 1 ÷ 2 Mean = 0 + 15 + 42 + 42 +24 + 15 + 9 Median = 2.1 + 1 ÷ 2 Mean = 147 ÷ 70 Median = 1.55 Mean = 2.1 Mode = Number of sick days with the highest frequency Mode = 2


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