Tag: Mathematics

What is the value of doing this assignment? You’ll practice your problem solving skill by identifying foundational statistical concepts and explaining how data-driven decision making can help inform real world problems. This will provide you with a solid foundation that will help you to not only be successful in this course, but to learn to make smarter, data-driven decisions in your personal and professional life.

Your goal for this assignment is to: Practice your problem solving skill by answering questions about statistical concepts and the benefits and uses of data-driven decision making.

Steps

STEP 1: Answer the questions below in a Word document.

1. Explain the difference between descriptive and inferential statistical methods and give an example of how each could help you draw a conclusion in the real world.

2. You would like to determine whether eating before bed influences your sleep patterns. Describe the steps you would take to conduct a statistical study on this topic.

• What is your hypothesis on this issue?
• What type of data will you be looking for?
• What methods would you use to gather information?
• How would the results of the data influence decisions you might make about eating and sleeping?

3. A company that sells tea and coffee claims that drinking two cups of green tea daily has been shown to increase mood and well-being. This claim is based on surveys asking customers to rate their mood on a scale of 1–10 after days they drink/do not drink different types of tea. Based on this information, answer the following questions:

• How would we know if this data is valid and reliable?
• What questions would you ask to find out more about the quality of the data?
• Why is it important to gather and report valid and reliable data?

4. Identify two examples of real world problems that you have observed in your personal, academic, or professional life that could benefit from data driven solutions. Explain how you would use data/statistics and the steps you would take to analyze each problem. You may also choose topics below (or examples from the weekly content) to help support your response:

• Crime reduction and trends

5. How does analyzing data on these real world problems aid in problem solving and drawing conclusions? Be sure to note the value and benefits of data-driven decision making.

Book used 

Anderson, D. R., Sweeney, D. J., Williams, T. A., Camm, J. D., Cochran, J. L., Fry, M. J., & Ohlmann, J. W. (2016). Quantitative methods for business with CengageNOW (13th ed.). Boston, MA: Cengage Learning. ISBN-13: 9781305799257

The most important part of statistics is accurately and effectively
communicating the results of a study. For this lab, you will be
conducting a statistical study of your choosing and reporting out your
results.

Lab Procedure:

• Think of a topic or question that you’re interested in exploring further that can be studied through data.
  • It is recommended, but not required, that you pick a topic in your field of study.
• Find a source for your data (or use one of the suggested data source sites listed below).
  • The data must be quantitative and ratio-level (See Chapter 1).
  • You will need between 30 – 60 data values.
  • You will need to provide a direct link to the source of the data.
• Using Excel, perform the following statistical analyses:
  • Calculate the relevant and necessary descriptive statistics (See Chapter 2)
  • Use Excel to generate a frequency histogram (See Chapter 2)
    • It should be accurate, with the proper number of classes
    • All axes should be properly labeled
    • See textbook and Canvas resources for examples of properly formatted histograms
• Write a report that is suitable to be published in a student newspaper or online news site.
  • The report should be 2 – 4 paragraphs in length
    
    

The audience for your article should be the general public. This is an exercise in creating authentic and professional work,

• • Not just outlining steps you did for an assignment. Write this as it
    was assigned to you by a supervisor at a new job, not an instructor in a
    stat class.
  • As shown in the sample report, yours should include an
    introduction/background, statistical analysis (both in words and with
    graphics), and a conclusion based on the analysis.
  • Your written report should include both a frequency distribution
    table and the frequency histogram that you created using your data in
    Excel. (See sample report)
    • These figures should be titled, formatted, and appropriately sized (see sample report)
• To submit, you will upload two files
  • The Excel file needs to be uploaded as an actual Excel file (.xls or .xlsx, NOT a PDF)
  • The written report should be submitted as a .PDF file.

• Book : Statistics Essentials 2e

  Navidi

  2017 © McGraw-Hill, Inc.

  ISBN-10: 1259570649
  ISBN-13: 9781259570643

Option #1: Analyzing Advertising Expenditure

As a data scientist of a company, you want to analyze the following data collected by your company which relates the advertising expenditure A in thousands of dollars to total sales S in thousands of dollars. The following table shows this relationship:

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1. Determine if the above relation (A, S) defines a function or not.
2. Using Excel, draw a scatter diagram of data. Click here (Links to an external site.) for a video explanation on how to create a scatter plot and linear regression.
3. Using Excel, find the line of the best fit of the models.
4. Add this line to the scatter diagram.
5. Interpret the slope and y-intercept of this equation.
6. Express this equation as a function S of A and find its domain.
7. Predict the sales if the advertising expenditure is $24000.

Requirements:

1. Your paper should be 2-3 pages in length (not counting the title page and references page) and cite and integrate at least one credible outside source. The CSU Global Library (Links to an external site.) is a great place to find resources. Your textbook is a credible resource.
2. Include a title page, introduction, body, conclusion, and a reference page.
   1. The introduction should describe or summarize the topic or problem. It might discuss the general applications of the topic or it might introduce the unique terminology associated with the topic.
   2. The body of your paper should address the questions posed in the problem. Explain how you approached and answered the question or solved the problem, and, for each question, show all steps involved. Be sure this is in paragraph format, not numbered answers like a homework assignment.

• The conclusion should summarize your thoughts about what you have determined from your analysis in completing the assignment. Nothing new should be introduced in the conclusion that was not previously discussed in the body paragraphs.

1. Include any tables of data or calculations, calculated values, and/or graphs referenced in the paper. (Note: The minimum required length excludes any tables, graphs, etc.)
2. Document formatting, citations, and style should conform to APA style and examples can be found in the following links:

• Citing and APA Resources (Links to an external site.): document formatting, citations, and style
• New Sample APA Paper (Links to an external site.): A short summary containing much that you need to know about paper formatting, citations, and references
• CSU Global Writing Center (Links to an external site.): many helpful areas, such as: Writing Center, Writing Tips, Template Examples/Papers Essays, and others

Math 142 Round–off Rules(1) When calculating a proportion, percent, orprobability, round–off your answer to have three significant figures.(2) If you are given a set of data values, round–offthe meanand standard deviationto one decimal place morethan the given data.(3) Round–off test statistics(Z, T, F, and chi–square)to three decimal places.(4) When using a given mean and standard deviation to calculate something, round–off your answerto have the same number of decimal placesas the given mean and standard deviation.

ANOVA assignment using CMPUTATIONAL formulas, and no statistical software. I need to be able to show handwritten formulas and where the numbers came from. Thank you so much and materials are provided, including the computational formulas that I need to use.

I have a Trigonometry assignment that’s timed 2 hours and I only have one attempt. I need an expert in Trigonometry to help me, I’ll post the questions one by one once I open the assignment and I expect the correct answers from you.

2 hours timed, so when we start you can’t leave until we’re done.

I’m studying and need help with a Statistics question to help me learn.

Prepare: Prior to beginning work on this discussion, read Chapter 5: Statistical Reasoning and Chapter 6: Putting Statistics to Work in your course text.

Research a news article or website that provides data sets and statistical report information such as the United States Census Bureau (Links to an external site.), the U.S. Energy Information Administration (Links to an external site.), the Centers for Disease Control and Prevention’s National Center for Health Statistics (Links to an external site.), or the National Center for Education Statistics (Links to an external site.). Your selected news article or website should provide enough information to allow you to fully answer each of the questions below.

Write: For your post, identify your selected news article or website using correct APA formatting followed by your fully developed answers to each of the following:

• Describe the role of statistics in the news article or report.
• What was the population of the study?
• What was the sample?
• Do you believe the statistical results are believable and meaningful?
• Use the Eight Guidelines for Evaluating a Statistical Study mentioned in Chapter 5B to explain why the results are believable and meaningful (or why not).
• What sorts of statistics (e.g., graphical, non-graphical, hypotheses, correlation, averages, etc.) were used in the report?
• How was the data distributed?
• How are distribution and variation important in any statistical study?
• Was any margin of error mentioned in the report?
• If no margin of error was mentioned, then assume that it is 2%. Interpret the margin of error in terms of 95% confidence interval.

All of the instructions are provided in the attachments below. Must show all of the work.

ALL STEPS AND CALCULATIONS MUST BE SHOWN IN ORDER TO RECEIVE CREDIT, AND IF YOU INTRODUCE A NEW VARIABLE INTO A PROCESS, YOU MUST DEFINE IT.