BUS 308 Week 4 DQ 1 Confidence Intervals
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Discussion 41/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 results better? Why? Ask a manger in your organization if they would prefer a single point estimate or a range for important measures, and why? Please share what they say
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ASSIGNMENT WEEK 5
1. Create a correlation table for the variables in our (Use analysis ToolPak or StatPlus:mac LE function Correlation).
a. Reviewing the data..

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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 minim..

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Discussion 52/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 ..

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Discussion 51/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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1. Question : The goodness of fit test null hypothesis states that the sample data does not match an expected distribution.
Question 2. Question : St..

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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. Quest..

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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
1. &..

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Discussion 42/ChiSquare Tests
Chisquare 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 chisquare tests? What would these results tell you?
..

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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 re..

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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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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 ttest (1 sample, 2 sample (with and without equal variance), and paired; we have several versions of ANOVA – single factor, factorial (called 2factor with replicat..

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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..

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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 square..

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Problem Set Week Two
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
Included in the Week Two tab of theEmployee Salary Data Set are 2 onesample ttests..

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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 peri..

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Discussion 21/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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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.&..

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1. Question : Data on the city from which members of a board of directors come represent interval data.
2. Question : Infere..

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1. 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 ..

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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 n..

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Discussion 11/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 diff..

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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 Probl..
