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GSB420 - Business Statistics: Lecture 2 - Ch 3 - Correlating two sets of data
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GSB420 - Business Statistics. GSB 420 - Notes from Applied Quantitative Analysis - Winter 2008. Friday, January 11, 2008. Lecture 2 - Ch 3 - Correlating two sets of data. In the first lecture, we talked briefly about the correlation of two sets of data in a scatter plot. That discussion described the correlation in a qualitative way. Here we define the measure of correlation more precisely with two measures: covariance and coefficient of correlation. For two sets of data, x and y:. Covar(x,y) / s. Lectur...
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GSB420 - Business Statistics: Lecture 1 - Ch 3 - Descriptive Statistics
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GSB420 - Business Statistics. GSB 420 - Notes from Applied Quantitative Analysis - Winter 2008. Tuesday, January 8, 2008. Lecture 1 - Ch 3 - Descriptive Statistics. We now discuss some basic concepts we can use to quantitatively describe a set of values. Rather than describing the set by painting a picture with a graph, chart or table as we did in the previous blog post, we paint the picture in a more precise and analytical way using numbers. Commonly called the average. Of Q1 = (n 1)/4. Of Q2 = (n 1)/2.
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GSB420 - Business Statistics: Lecture 4 - Ch 6 - The Normal Distribution
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GSB420 - Business Statistics. GSB 420 - Notes from Applied Quantitative Analysis - Winter 2008. Saturday, January 26, 2008. Lecture 4 - Ch 6 - The Normal Distribution. The Normal Distribution is defined generally by the function:. Where did that wacky formula come from? We may never know. But luckily we don't need to know the derivation of the formula. In fact, we don't even need to know how to use the formula because we're going to do three things:. 2 compute tables for the standardized formula. Learnin...
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GSB420 - Business Statistics: Sample vs. Population
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GSB420 - Business Statistics. GSB 420 - Notes from Applied Quantitative Analysis - Winter 2008. Friday, January 11, 2008. Sample vs. Population. Use English letters for sample statistics and Greek letters for the analogous population stat. Sample stats typically use (n-1) for the sample size while population stats use N. The reason for this difference is beyond the scope of this class (at least for now). The exception is the mean where both use n (and N). Friday, January 11, 2008. Subscribe to this Blog.
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Local AP Statistics Forum: December 2005
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Local AP Statistics Forum. Dialogue for Cobb County AP Statistics teachers and other interested people. Please post your results if you use these activities or concepts. Wednesday, December 07, 2005. Examples of Questionable Causation. An early AP Statistics practice exam had cricket chirps per minute as the explanatory variable and temperature as the response variable. Does this mean that we might blame the chirping of crickets for global warming? What other spurious relationships have you found? At eac...
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Local AP Statistics Forum: February 2007
http://cobbstats.blogspot.com/2007_02_01_archive.html
Local AP Statistics Forum. Dialogue for Cobb County AP Statistics teachers and other interested people. Please post your results if you use these activities or concepts. Thursday, February 22, 2007. Website for the audit. Dianna Lossner provided the link she mentioned on Tuesday:. Http:/ web.mac.com/statsmonkey/iWeb/APStats%20at%20LSHS/AP%20Audit.html. It has good information about the AP Audit and Daren Starnes' syllabus. Posted by Mrs.L @ 4:00 PM. Links to this post. View my complete profile.
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Local AP Statistics Forum: March 2006
http://cobbstats.blogspot.com/2006_03_01_archive.html
Local AP Statistics Forum. Dialogue for Cobb County AP Statistics teachers and other interested people. Please post your results if you use these activities or concepts. Wednesday, March 01, 2006. Don Slater just forwarded this link: http:/ nlvm.usu.edu/en/nav/category g 4 t 5.html. It is user-friendly and helpful for individual investigations. Have your kids gone to the Numb3rs website yet? Posted by Mrs.L @ 10:41 PM. Links to this post. View my complete profile. Recommendations for New AP Stat teachers.
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GSB420 - Business Statistics: Lecture 1 - Quiz
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GSB420 - Business Statistics. GSB 420 - Notes from Applied Quantitative Analysis - Winter 2008. Tuesday, January 8, 2008. Lecture 1 - Quiz. Coefficient of Variation = 10%. We know the relationship between the coefficient of variation, standard deviation and the mean:. We also know that the standard deviation is simply the square root of the variance:. Therefore, combining these two formulas and plugging in our givens, we get:. 10 = (sqroot(25) / mean) * 100. 10 = (5/mean) * 100. 10 = 500 / mean. Lecture ...
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GSB420 - Business Statistics: Lecture 3 - Ch 5 - Poisson Distribution
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GSB420 - Business Statistics. GSB 420 - Notes from Applied Quantitative Analysis - Winter 2008. Thursday, January 24, 2008. Lecture 3 - Ch 5 - Poisson Distribution. Is derived from the binomial distribution and describes probabilities of success within a certain " area of opportunity. The area of opportunity could be a time interval, surface area, etc. For a scenario which follows a Poisson Distribution, the probability of a x. Success events occuring in an area of opportunity is:. Lambda = the average.
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GSB420 - Business Statistics: Lecture 4 - Ch 6 - Continuous Random Variables
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GSB420 - Business Statistics. GSB 420 - Notes from Applied Quantitative Analysis - Winter 2008. Saturday, January 26, 2008. Lecture 4 - Ch 6 - Continuous Random Variables. Discrete vs. Continuous Random Variables. We now started learning about continuous. Random variables. These are random variables which can take (more or less) any. Saturday, January 26, 2008. Subscribe to: Post Comments (Atom). Subscribe to this Blog. Subscribe in a reader. The best team in NFL history. Sample midterm questions - Part 2.