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2. Allison Paul. “When Can You Safely Ignore Multicollinearity?”2012. Accessed April 5 2020.https://statisticalhorizons.com/multicollinearity
3. American Federation of Teachers vs. Richard Ledbetter. “Circuit Court of St. Louis City. No. SC91766.”2012. Accessed March 25 2020.https://cases.justia.com/missouri/supreme-court/sc91766.pdf?ts=1396129275
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