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SYM 506 – Understanding Data and Analysis Using Graphs
The U.S. government keeps statistics on many people in America. One interesting statistic is the poverty rate. To be living in poverty, one must earn income below a certain threshold (approximately $900 per month). Many multimillionaires are included in this statistic. Recently, Barbara Streisand was “living in poverty.” In a particular year, she did not perform live, and her album sales were extremely slow. She has a great deal of wealth but had little income that year. Although she has more money than 99.99% of the rest of the population, the government believed that she was impoverished. What other statistic can you name that is misleading? Why?
You just saw a commercial for the Tread Master, an exercise machine that claims an average weight loss of 10 pounds. A commercial for the Climber, a competing product, claims that only 1 out of 10 users of the Tread Master lost any weight at all. The rest of them gained weight. How can both of these claims be true?
The definition a probability isstated as: A measure of the likelihood that an event in the future will happen; it can only assume a value between 0 and 1, inclusive. Explain the meaning of the 0 and 1.
You are looking for a home in a particular neighborhood, and you want to know the typical number of bathrooms and bedrooms, the square footage, and the appraised value of houses in that neighborhood. Which measure of central tendency (mean, median, or mode) would be the most appropriate for each piece of information listed, and why?
Provide some examples of discrete and continuous variables. What attributes of these variables make them discrete and continuous? Why?
Describe the term mutually exclusive. Provide some examples. Must the values of x in a discrete probability distribution always be mutually exclusive? Why or why not? Provide an example.
You just saw an ad on television that states the majority of the population would vote to make smoking illegal. The poll that is referenced shows 53% of those asked supported making smoking illegal. In the fine print at the bottom of the screen, you see that the margin of error is +/- 3%. What is your reaction? Explain.
As the marketing director of Harley-Davidson, you need to determine what your customers would like in the next model. You put a survey on the Harley website. Is this a good frame from which to select your sample? Explain.
Your mayor just announced that the local unemployment rate dropped last month from the prior month. It went from 10.5% to 10.4%. Is this a significant drop? Explain.
Give an example of a situation in which you believe a Type I Error is more serious than a Type II Error. Give an example of a situation in which you believe a Type II Error is more serious than a Type I Error. In each case, why do you think so?
What does the p-value tell the business statistician, especially in terms of the normal curve? If the p-value is smaller than the level of significance, what does that mean in terms of the null hypothesis? Why?
A research firm tracks the average highway speed of 30 drivers driving home on Day 1. For the next 10 days, the drivers are given two cups of coffee 1 hour before the drive home. On the 10th day, the average highway speed is measured again. Does this study involve dependent or independent samples? You are interested in knowing if there is a statistical difference in driving speeds between Day 1 and Day 10. Which statistical test would be appropriate? Why?
Provide an example of where you could use correlation in real life. Explain why a t-test is necessary before you accept this correlation as being real in the population.
Compare and contrast Spearman and Pearson correlations.
In ANOVA analysis, what is the real meaning of the term treatment? What does this really mean? Provide some examples of treatments from a business or managerial perspective.
How many different tests does the textbook give you for applying the chi-square distribution? What are these tests? How could you use each of these tests at your place of business?
SYM 506 – Understanding Data and Analysis Using Graphs
Complete the problems below from the textbook. You will need to use the “Buena School District Bus Data” file for this assignment.
For problems requiring computations, please ensure that your Excel file includes the associated cell computations and/or statistics output. This information is needed in order to receive full credit on these problems.
Submit output in one Excel file.
You are not required to submit this assignment to LopesWrite.
SYM-506-RS-Buena School District Bus Data.xls
Complete the problems below from the textbook. You will need to use the “Buena School District Bus Data” and the “Century National Bank Data” files for this assignment.
For problems requiring computations, please ensure that your Excel file includes the associated cell computations and/or statistics output. This information is needed in order to receive full credit on these problems.
Submit output in one Excel file.
You are not required to submit this assignment to LopesWrite.
SYM-506-RS-Buena School District Bus Data.xls SYM-506-RS-Century National Bank Data.xls
For problems requiring computations, please ensure that your Excel file includes the associated cell computations and/or statistics output. This information is needed in order to receive full credit on these problems.
Submit output in one Excel file.
You are not required to submit this assignment to LopesWrite.
SYM-506-RS-Century National Bank Data.xls SYM-506-RS-Buena School District Bus Data.xls SYM-506-RS-Baseball 2012 Data.xlsx
SYM 506 – Understanding Data and Analysis Using Graphs
Create an individual Excel document for each of the required items.
APA format is not required, but solid academic writing is expected.
This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.
You are not required to submit this assignment to LopesWrite.
For problems requiring computations, please ensure that your Excel file includes the associated cell computations and/or statistics output. This information is needed in order to receive full credit on these problems.
Submit output in one Excel file.
You are not required to submit this assignment to LopesWrite.
SYM-506-RS-Century National Bank Data.xls SYM-506-RS-Buena School District Bus Data.xls
SYM 506 – Understanding Data and Analysis Using Graphs
Create an individual Excel document for each of the required items. Be sure to show your work.
APA format is not required, but solid academic writing is expected.
This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.
You are not required to submit this assignment to LopesWrite.
For problems requiring computations, please ensure that your Excel file includes the associated cell computations and/or statistics output. This information is needed in order to receive full credit on these problems.
Submit output in one Excel file.
You are not required to submit this assignment to LopesWrite.
SYM-506-RS-Buena School District Bus Data.xls SYM-506-RS-Baseball 2012 Data.xlsx
Create an individual Excel document for each of the required items.
APA format is not required, but solid academic writing is expected.
This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.
You are not required to submit this assignment to LopesWrite.
SYM 506 – Understanding Data and Analysis Using Graphs
For problems requiring computations, please ensure that your Excel file includes the associated cell computations and/or statistics output. This information is needed in order to receive full credit on these problems.
Submit output in one Excel file.
You are not required to submit this assignment to LopesWrite.
SYM-506-RS-Baseball 2012 Data.xlsx SYM-506-RS-Buena School District Bus Data.xls SYM-506-RS-Century National Bank Data.xls
For problems requiring computations, please ensure that your Excel file includes the associated cell computations and/or statistics output. This information is needed in order to receive full credit on these problems.
Submit output in one Excel file.
You are not required to submit this assignment to LopesWrite.
SYM-506-RS-Century National Bank Data.xls SYM-506-RS-Baseball 2012 Data.xlsx SYM-506-RS-Buena School District Bus Data.xls
For problems requiring computations, please ensure that your Excel file includes the associated cell computations and/or statistics output. This information is needed in order to receive full credit on these problems.
Submit output in one Excel file.
You are not required to submit this assignment to LopesWrite.
SYM-506-RS-Buena School District Bus Data.xls
SYM 506 – Understanding Data and Analysis Using Graphs
APA format is not required, but solid academic writing is expected.
This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.
You are not required to submit this assignment to LopesWrite.