'Freedom increases' presentation slideshows

MGT-491 QUANTITATIVE ANALYSIS AND RESEARCH FOR MANAGEMENT

Session 20. MGT-491 QUANTITATIVE ANALYSIS AND RESEARCH FOR MANAGEMENT. OSMAN BIN SAIF. Summary of Last Session. Hypothesis Testing Introduction General Procedure Significance. CROSS TABULATIONS.

562 views • 44 slides

Chapter 11 Chi-Square Procedures

Chapter 11 Chi-Square Procedures. 11.1 Chi-Square Goodness of Fit. Characteristics of the Chi-Square Distribution 1. It is not symmetric. Characteristics of the Chi-Square Distribution 1. It is not symmetric.

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Section 7-5

Section 7-5. Estimating a Population Variance. MAIN OBJECTIIVES. Given sample values, estimate the population standard deviation ? or the population variance ? 2 . Determine the sample size required to estimate a population standard deviation or variance.

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P(-1.96 < z < 1.96) = .95

P(-1.96 < z < 1.96) = .95. Shape of t Distributions for n = 3 and n = 12. Degrees of Freedom ( dof ). Example : If 10 students take a quiz with a mean of 80, we can freely assign values to the first 9 students, but the 10 th student will have a determined score.

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6.2 Confidence Intervals for the Mean ( ? unknown )

6.2 Confidence Intervals for the Mean ( ? unknown ). Key Concepts: Properties of the t-distribution Finding Areas Below a t-curve Building and Interpreting Confidence Intervals for the Mean. 6.2 Confidence Intervals for the Mean ( ? unknown ). What is the t-distribution?

61 views • 5 slides