Statistics discussion questions

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Week 1 Discussion

Post a total of three (3) substantive responses over at least two (2) separate days for full participation. These posts include your initial discussion, and two (2) replies to other students.

Word count is unmeasured; however, ensure there is sufficient discussion to have a substantial response.

This is a lengthy discussion – most weeks will be less demanding.

Due by Thursday (35 points)

Initial Discussion Respond to the following 19 questions:

Ch. 1: Introduction

Read Chapter sections: 1.1, 1.2

a1. Discuss the two branches, descriptive and inferential statistics.

a2. Where have you used descriptive statistics, and for what purpose?

a3. While you may not have used inferential statistics, provide an example where you might use it.

  1. Define statistical terms: Variable, Population, Sample, Census, Parameter, Statistics. (Comment on population meaning other than people).

c1. Describe the four different levels of data: Nominal, Ordinal, Interval, and Ratio (NOIR).

c2. Which level of measurement is a grade point average (GPA)?

c3. Which level of measurement is a letter grade, such as A, B, C?

  1. What are some ethical issues discussed in the textbook?

Ch. 3: Descriptive Statistics

Read Chapter sections: 3.1, 3.2, 3.3, 3.4

a1. How would you define Central Tendency?

a2. What are the three measures typical of ungrouped data?

a3. Which measure is least sensitive to extreme data values?

b1. How would you define Variability?

b2. Three variability measures typical of ungrouped data are Standard Deviation, Interquartile Range (IQR), and Range. Which measure is least sensitive to extreme data values?

  1. There are grouped and ungrouped data. What might each one look like on a customer survey inquiring about the individual’s age?

d1. Skewness. Is the data normally distributed when it is symmetrical along a bell-shaped curve?

d2. When data is significantly skewed, how is the mean and the median affected?

d3. Review Figure 3.18 Descriptive Statistics on clothes washer water consumption. The Anderson-Darling Normality Test shows the p-value less than .05, which suggests a skewed data distribution. Understanding d2 above, explain why the median is a better representation of central tendency than the mean.

Ch. 4: Probability

Read Chapter section: 4.1

  1. Explain what a Subjective probability is. When would this be a benefit in problem-solving? When would this be a detriment to problem-solving?
  2. Explain the concept of Mutually Exclusive.

Part 2

Assignment Content

Purpose

A homework document is attached. It incorporates three topics in support of your Business Research paper assignment in Weeks 1 and 2.

I recommend completing the homework before the Business Research paper.

Topics:

Identifying the Level of Measurement

Variables

Research Question

Submit. The homework is due on Day 7. But, posting by midnight, Friday will allow the instructor to review your paper and return it to you on Saturday. You will have time to make corrections and resubmit by Day 7. Learning by making mistakes will build knowledge and your GPA.

This is a worksheet that does not require APA formatting.

Week 1 Homework QNT.docx

The Research Question Handout.pdf

Part 3 Assignment Content

  1. Purpose of Assignment The purpose of this assignment is for students to synthesize the concepts learned as they progress through the course with a hands-on practical application. The draft business research paper begins in Week 1 and progresses to a grade in Week 6. Weekly feedback will comment on the completeness and reviews the corrections. Assignment Steps:Preliminary
    1. Use the Business Research Paper.docx as an APA formatted template.
    2. Use the Business Research Paper Instructions.docx for step-by-step guidance.
    3. Review the Data Set Choices.xlsx and select one of interest or familiarity. You may choose to use your data that is already available.
    4. Copy the data into a new Excel document.
    5. Select two numeric variables or one numeric and one non-numeric variable.
    6. Create a realistic scenario with a background based on your experience, the data set, and the two variables. Use your creativity.
    7. Write a business question you would like answered in Week 5 based on the two variables and your creative scenario.

Variables, Level of Measurement

    1. Write the variable names in Table 1.
    2. Identify each variable as a dependent (DV) and independent (IV).
    3. Then place an “X” in the level of measurement (LM) box to indicate the variable is either Non-Numeric or Numeric.

 

Last Updated on January 29, 2020