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BUS 308 Week 1 DQ 1 Language BUS 308 Week 1 DQ 2 Probability BUS 308 Week 1 Quiz BUS 308 Week 1 Problem Set BUS 308 Week 1 Quiz (New) BUS 308 Week 2 DQ 1 Hypotheses BUS 308 Week 2 DQ 2 Variation BUS 308 Week 2 Quiz BUS 308 Week 2 Quiz (New) BUS 308 Week 2 Problem Set BUS 308 Week 3 DQ 1 A..
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Discussion 1-1/Language Numbers and measurements are the language of business. Organizations look at results in many ways: expenses, quality levels, efficiencies, time, costs, etc. What measures does your department keep track of? Are they descriptive or inferential data, and what is the difference..
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Things vary in life – virtually nothing (except physical standards such as the speed of light) we interact with is constant over time. Much of this variation follows somewhat predictable patterns that can be examined using probability. An example of a subjective probability is: “Cops usually do not ..
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1. Question : Data on the city from which members of a board of directors come represent interval data. 2. Question : Inferential statistics infer the characteristics of samples. 3. Question : The mode is which of the following? 4. Question : The standard error of the mean can be calculated b..
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For assistance with these calculations, see the Recommended Resources for Week One. Measurement issues. Data, even numerically code variables, can be one of 4 levels – nominal, ordinal, interval, or ratio. It is important to identify which level a variable is, as this impacts the kind of analysis we..
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1. Question : In statistical notation, M is to μ as s is to σ. Question 2. Question : A parameter refers to a sample characteristic. Question 3. Question : Data on the city from which members of a board of directors come represent interval data. Question 4. Question : In a frequency dist..
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Discussion 2-1/Hypotheses What is a hypothesis test? Why do we need to use them to make decisions about relating sample results to the population; why can’t we just make our decisions by the sample value?..
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Variation exists in virtually all parts of our lives. We often see variation in results in what we spend (utility costs each month, food costs, business supplies, etc.). Consider the measures and data you use (in either your personal or job activities). When are differences (between one time period ..
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1. Question : How is the sum of squares unlike either the standard deviation or the variance? 2. Question : If sums of squares statistics are calculated for shoppers at three different retail outlets, what statistic will indicate the variability among those at each outlet? 3. Question : Which is..
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1. Question : What is the relationship between the power of a statistical test and decision errors? Question 2. Question : The desired sample depends on all of these factors except? Question 3. Question : What question does the z test answer? Question 4. Question : The desired sample size..
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Problem Set Week TwoComplete the problems below and submit your work in an Excel document. Be sure to show all of your work and clearly label all calculations. All statistical calculations will use the Included in the Week Two tab of theEmployee Salary Data Set are 2 one-sample t-tests comparing mal..
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In many ways, comparing multiple sample means is simply an extension of what we covered last week. Just as we had 3 versions of the t-test (1 sample, 2 sample (with and without equal variance), and paired; we have several versions of ANOVA – single factor, factorial (called 2-factor with replication..
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Several statistical tests have a way to measure effect size. What is this, and when might you want to use it in looking at results from these tests on job related data?..
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ASSIGNMENT WEEK 3 Complete the problems below and submit your work in an Excel document. Be sure to show all of your work and clearly label all calculations. All statistical calculations will use the (Note: Questions 1- 4 have additional elements to respond to below the analysis results.) Last we..
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Discussion 4-1/Confidence Intervals Many people do not “like” or “trust” single point estimates for things they need measured. Looking back at the data examples you have provided in the previous discussion questions on this issue, how might adding confidence intervals help managers accept the resul..
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Discussion 4-2/Chi-Square Tests Chi-square tests are great to show if distributions differ or if two variables interact in producing outcomes. What are some examples of variables that you might want to check using the chi-square tests? What would these results tell you?..
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ASSIGNMENT WEEK 4 Let’s look at some other factors that might influence pay. Complete the problems below and submit your work in an Excel document. Be sure to show all of your work and clearly label all calculations. All statistical calculations will use the Using our sample data, construct a 95..
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1. Question : The goodness of fit test null hypothesis states that the sample data does not match an expected distribution. Question 2. Question : Statistical significance in the Chi-square test means the population distribution (expected) is not the source of the sample (observed) data. Que..
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1. Question : With reference to problem 1, what statistic determines the correlation of experience with productivity, controlling for age in experience? 2. Question : In a problem where interest rates and growth of the economy are used to predict consumer spending, which of the following will incr..
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Discussion 5-1/Correlation What results in your departments seem to be correlated or related to other activities? How could you verify this? Create a null and alternate hypothesis for one of these issues. What are the managerial implications of a correlation between these variables? ..
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Discussion 5-2/Regression At times we can generate a regression equation to explain outcomes. For example, an employee’s salary can often be explained by their pay grade, appraisal rating, education level, etc. What variables might explain or predict an outcome in your department or life? If you ge..
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ASSIGNMENT WEEK 5 Create a correlation table for the variables in our (Use analysis ToolPak or StatPlus:mac LE function Correlation). Reviewing the data levels from week 1, what variables can be used in a Pearson’s Correlation Table (which is what Excel produces)? Place the table here. ..
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This tutorial contains 2 Different Papers The final paper provides you with an opportunity to integrate and reflect on what you have learned during the class.The question to address is: “What have you learned about statistics?” In developing your responses, consider – at a minimum – and discuss t..
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BUS 308 Week 1 Assignment Problems 1.2, 1.17, 3.3 & 3.22 BUS 308 Week 1 DQ 1 Performance Report BUS 308 Week 1 DQ 2 The Empirical Rule vs. Chebyshev Theorem BUS 308 Week 1 Quiz (10 MCQ) BUS 308 Week 2 Assignments Problems 4.4, 4.20, 5.12, 6.22(a) BUS 308 Week 2 DQ 1 Relative Frequen..
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BUS 308 Week 1 Problems 1.2, 1.17, 3.3 and 3.22 ..
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You are the manager at a company and are asked to present a report on the year-to-date performance of your division. What type of statistical information would you include in your report? In particular, which descriptive statistics (mean, median, standard deviation, etc.) do you think would best ..
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The Empirical Rule vs. Chebyshev’s Theorem Discuss how the Empirical Rule works and how it relates to the bell curve as illustrated in Figure 3.14 (a). Then, explain Chebyshev’s Theorem and how it is different from the Empirical Rule. Give a specific example of a population with which the Empir..
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1. Question : The two types of quantitative variables are       2. Question : As a general rule, when creating a stem-and-leaf display, there should be between ..
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BUS 308 Week 2 Assignments Problems 4.4, 4.20, 5.12, 6.22(a) ..
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Relative Frequency. Conceptually we would expect the probability of newborn males and females to be the same. However, census reports indicate that the ratios of males and females in various countries do not conform to the theoretical prediction. What do you think accounts for this variation? Can..
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Applications for Probability. In what situations might you use probability as a manager to approach business-related problems? What are the advantages to using probability conce..
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1. Question : In a statistical study, the random variable X = 1, if the house is colonial, and X = 0 if the house is not colonial, then it can be s..
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BUS 308 Week 3 Assignments Problems 7.11, 7.30, 8.8, 8.38 ..
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Unscientific Sampling. Consider question 7.45 from the text: A Milwaukee television station, WITI-TV, conducted a telephone call-in survey asking whether viewers liked the new n..
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Article Review. Many articles present statistical data and list margins of error (for example, reports on political opinion polls, growth or decline of the housing markets,..
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1. Question : There is little difference between the values of ta/2 and Za/2 when the sample      2. Question : If the population proportion is .4 with a s..
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BUS 308 Week 4 Assignments Problems 9.13, 9.22, 12.10, 12.18(a) ..
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Give an example of a hypothesis test you could perform at work or at home. State what the Null and the Alternative hypotheses would be in your test. Explain&..
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Creating Hypotheses. Assume you are the manager of a paint manufacturing factory. Your company has received complaints from customers that the containers hold less than the..
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1. Question : Consider using p-value to test H0 versus Ha by setting α equal to .10. We reject H0 at level α of significance if and only if the p-value ..
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Calculate the mean yearly value using the average gas prices by month found in the"Final Project Data Set". 2.Using the years as your x-axis and the annual mean&nb..
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Quality Control. Visit the websites on Quality Control (QC) listed in the Required Websites for this week. In addition, locate an article on the Internet or in th..
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Linear Correlation. Do you think there is a correlation between CEO salaries and the degree of success of a company? If you were to take a sample of companie..
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Imagine that you are a manager at a delivery service and you are creating a report toproject the effects on your company of rising gas prices in the next&nbs..

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