Parkes' Business Statistics Assignments Page

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GRADES:   Section 1   Section 3 

 
Course Assignments:

End of week 15

Friday, December 10, 2004 - REVIEW DAY

• Final discussion of single and multivariate regression

Wednesday, December 8, 2004   Print out the multivariate regression page for problem 18.7

• Problems on multivariate regression
• F-test, Adjusted R square and t-tests

Monday, December 6, 2004  Regression Problem Set Due Today - Turn In Problem 17.90 (a through d only) - 5 pts

• Chapter 18: Multivariate Regression analysis
• MBA Problem - Introduction to Chapter 18, discussed

End of week 14

Friday, December 3, 2004   

• Chapter 17: Regression analysis continued
• The Coefficient of Determination

Wednesday, December 1, 2004  

• Chapter 17: Regression analysis continued
• Hypothesis testing the slope: Is their a relationship between x and y?
• Excel and Computor printouts

Monday, November 29, 2004  

• Chapter 17: Regression analysis - Least Squares estimators, the betas
• Required conditions for the error term
• Calculation of the standard error of the estimate
• The correlation coefficient

End of week 13A (grin - a "non" week)

Friday, November 26, 2004 BREAK CONTINUES!!!

Wednesday, November 24, 2004   THANKSGIVING BREAK - ENJOY!!

Monday, November 22, 2004 

• Chapter 17: Regression analysis

End of week 13 - A TUTOR IS AVAILABLE NOW ON TUESDAY NIGHT FROM 6:30 - 8:30 pm

Friday, November 19, 2004   Review the Test, Regression Problem Set handed out

• Review the test and further discussion of regression analysis
• Problem 4.56 turned in at the end of class

Wednesday, November 17, 2004   Test III - Chapters 10, 11 and 12  Confidence Intervals and Hypothesis Tests

Monday, November 15, 2004   Preview for the Test

• Chapter 4: Covariance, coefficient of correlation, and least squares method, pp. 116 - 128.
• Problems 4.55-58 are highly recommended

End of week 12

Friday, November 12, 2004   Hand back problem sets

• Chapter 4: Covariance, coefficient of correlation, and least squares method, pp. 116 - 128.
• Problems 4.55-58 are highly recommended

Wednesday, November 10, 2004   Problem Set on Confidence Intervals and Hypothesis Tests Due

• Inference of proportions:  Problems 12.63-79 highlight differing sample sizes and estimated sample proportions, Problems 87 & 88, 92 & 93, as well as 96 through 100 are highly recommended.

Monday, November 8, 2004  

• Inference of variance and standard deviations:  Problems 12.47-52 highlight how the sample size affects the confidence intervals and hypothesis tests for variances.  Problems 12.53 & 54, 58 - 62 are highly recommended.

End of week 11

November 5, 2004  

• Chapter 12: Continued
• Inference about a population variance, the confidence interval and hypothesis tests, example 12.3 will be covered.
• Inference about population proportions, the test statistic and confidence interval estimator of p. 
• We will discuss example 12.5. 
• We will also cover when to use each of these tests and why!?!

November 3, 2004   Problem Set on Confidence Intervals and Hypothesis Tests (Due November 10)

• Chapter 12 continued:
• Inference with an unknown population standard deviation, the student's t-distribution and example 12.1.
• Checking the required conditions, missing data.
• Exercises 27 and 33 on pages 364-5 are highly recommended (note that 21-29 are designed for you to comprehend the differences between the z and t distributions).

November 1, 2004  

• Review hypothesis testing and exercises on pages 339- 341:  11.9-12, 11.36-8, 11.43
• Do problems 11.51 and 11.52 in class.

End of week 10

October 29, 2004  

• The P-value approach - interpreting the p-value
• Interpreting the results of a test of hypothesis
• Problems 11.36-38 are highly recommended.
• Chapter 12: Inference about a population mean when the standard deviation is unknown.

October 27, 2004   Lunar Eclipse!

• Testing the population mean when the population standard deviation is known (use Z) - the seven steps
• Example 11.1 is used to show how the seven steps are implemented.
• Problem 11.9 is highly recommended.

October 25, 2004  

• Chapter 11: Introduction to hypothesis testing
• Type I and Type II errors
• One-tailed versus two-tailed tests.

End of week 9

October 22, 2004   Tests returned

• Problems on the standard normal (Z) versus the Student's t-distribution
• Confidence limits and the margin of error
• Probability versus confidence interval estimation, what's the difference?

October 20, 2004   TEST II:  Chapters 9, 10 and the previously mentioned portions of 12

October 18, 2004   Review

• Problems using the Student's t-distribution for confidence intervals.
• Problems 12.1 - 10 show the same changes in the width of the interval as were shown at the beginning of Chapter 10 for the standard normal (Z) distribution. 
• Problems 12:21 - 23, 31, 34, 35, 38 - 43 are highly recommended.

End of week 8

October 15, 2004   End of the first half of the semester.

• Selecting the sample size with problems 10:66, 70, 81 and 83 highly recommended
• Estimating the population mean when the population standard deviation is unknown (use student's t distribution) - three steps

October 13, 2004  

• Information and the width of the interval
• Problems 10.41, 45, 47 and 49 are highly recommended.

October 11, 2004

• Chapter 10:    Introduction to Estimation - Point versus Interval estimators, three desirable qualities of estimators.
• Confidence Intervals:
• Estimating the population mean when the population standard deviation is known (use Z) - three steps
• Example 10.1 and "Interpreting the confidence interval estimates"
• Problems 10.9, 12, 15, 18-21 are recommended.

End of week 7

October 8, 2004  

• Sampling distributions continued:  Exercise 9.10 in class and further discussion
• The finite correction factor.
• Sampling distributions continued:  Normal Approximation to the Binomial
• Exercises 9.35, 9.39 and 9.40 are recommended.
• Using the sampling distribution for inference.

October 6, 2004  

• The Central Limit Theorem - four components - continued.
• Example 9.1 and 9.2: the difference between the probability for a single observation and a sample.
• To do on your own: Exercises 9.1 & 2, 6 & 7 (note 8 & 9 answers too), 11, 18 and note 22.
• Exercise 9.10 in class

October 4, 2004

• The Chi Square Distribution - characteristics and finding the values from the table. (See problems 8.99 and 8.100)
• Chapter 9:  The Sample Distribution of the mean - THEORY!  The basic theory behind use of samples to make inferences about populations - an introduction today.
• The mean of the sampling distribution of sample means
• The standard error (the standard deviation of the sampling distribution)
• The Central Limit Theorem - four components.

End of week 6

October 1, 2004  

• Hand back and review the test.
• The characteristics of the Student's t-distribution and finding t- values from the table. (See problems 8.93 and 8. 94)

September 29, 2004   TEST 1b - Chapters 1, 2, 4, 5, 7 and 8.

September 27, 2004

• Review for the test.  Bring any questions you have over the material covered so far in the class.
• Review of the standard normal and normal distribution problems.

End of week 5

September 24, 2004  

• The transformation: from the normal to the standard normal distribution and visa versa

September 22, 2004   CLASS WILL NOT BE HELD - bring your problems and question to class Friday, please.

• Calculating probabilities using the normal distribution

September 20, 2004

• Introduction to the Normal Distribution
• Conditions and criteria - differences in mean, standard deviation
• Calculating probabilities - using the Z table.

End of week 4

September 17, 2004  

• The Poisson Distribution - the four conditions, distribution, mean, variance and standard deviation.
• Finding Poisson probabilities.
• Do problems 7.106, 109, 113, 114, 116 and 118.

September 15, 2004  

• Be ready with questions about the problems assigned for Monday (especially #33 - did you get their answer?).
• The binomial probability distribution - finding binomial probabilities, the mean, variance and standard deviation of a binomial distribution.
• Do problems 7.81, 84, 90a and 92a.

September 13, 2004  

• Chapter 7: Random variables, the two rules of probability, the laws of expected value and variance - describing the population/probability distribution.
• Do problems 7.7, 8, 18-21, 22, 23, 33 and 34. 
• The four conditions of a binomial experiment.

End of week 3

September 10, 2004   Excel Spreadsheet (Hwk 2) must be emailed to me prior to class.  E.g. Parkes2

• Discussion of Chapter 5 and sampling methods.
• Do problems 4.37, 4.40, 4.42, 4.43 and 4.44 to understand how to do the Interquartile Range (and Quartile Deviation).   (I will not collect the problems, the answers are in your solutions manual.)

September 8, 2004  

• Interquartile range, empirical rule and Chebyshev's theory discussed.
• Questions on Excel spreadsheet will be answered.

September 6, 2004   LABOR DAY - No classes!  Enjoy the last vacation of summer!

End of week 2

September 3, 2004   Quiz after the test.

• Measures of dispersion continued: Chapter 4 (pp. 106-116).
• Review Excel assignment and questions.  For the in class Golf examples click on Section 1  Section 3 and for the formulas Section 1 Formulas     Section 3 Formulas
• Test results returned.

September 1, 2004   Test Ia - 25 point multiple choice test!

• Measures of dispersion continued: finish covering material in Chapter 2 and Chapter 4 (pp. 106-116)
• Dispersion measures including the Interquartile range & coefficient of variation must show up on the Excel spreadsheet too.

August 30, 2004    Email your data set to me BEFORE class! Please put your name ON the spreadsheet.

• Excel spreadsheet assignment explained and made - 15 points, due Wednesday, September 8.
• FILE NAME: Use your last name: e.g. Parkes2.

End of week 1

August 27, 2004    Exam #1 Handout & Range, Variance and Standard Deviation

• Finish reading Chapter 2 and Chapter 4 (101 - 105).
• Discussion of Exam 1A
• Positively and negatively skewed distributions are discussed (Bill and Warren)

August 25, 2004    Assignment 1 is made & Mean, mode and Median

• Read Chapter 2 (especially pages 25-30) and Chapter 4 (especially pages 93-100).
• Assignment Due Monday, August 30, 2004 for 5 points:
  Gather a 31 observation sample data set.  List the data with a title in an Excel spreadsheet and email it to me.  Make sure to use your last name as the file name, e.g. PARKES1. 

August 23, 2004    Introduction to the course

• Read Chapter 1 (definitions) and rate of growth formula.

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email: drew at drewparkes.com
Last Update: December 06, 2004
By Andrew L. H. Parkes, Ph. D.