## MATH 221 Week 1 Homework plus Discussion Activities (Fall 2018)

##### MATH 221 Week 1 Graded Discussion: Descriptive Statistics

The list given below describes the 5 Required** **posts per week in this course. It does not matter which order you post in so long as you post on __4__ __different da__y__s__, with the first post no later than Wednesday. Finally, ALWAYS put the same headers that are given below at the TOP of your post so that we quickly recognize what you are doing.

**Analytical Post: **Pick ANY even multi-part problem from ANY chapter 2 section exercise set, and solve it here. State the problem, show your work and provide a narrative explanation (a paragraph) of what you did and what it means. DO NOT attach files in order to show work or images. __Embed the ima__g__e in__ __the workspace__. Use the equation editor to show the math, if needed. Feel free to attach spreadsheets if you’d like to share with others though.

**Learning Outcomes Post: **Visit the week’s Introduction page in the Module area and pick a Course Objective to demonstrate for us here. Include the text of the Objective in your post. Use the same guidelines given above in accordance with how they apply to the objective and enabler(s) you choose. Did I mention writing a full paragraph?

**Statistics In The News Post: **Search for a news item that is applicable to this week’s Course Objectives. Again, write one or more paragraphs explaining in detail why this news item corresponds to our course objectives this week.

**Professional Post: **Find a way to connect our coursework to your current or intended career. If you can use data from work and run it through whatever statistical mill we are playing with this week, go for it. If there is a relevant problem from the book to solve, work it out. If there is a research journal article that is relevant, write a paragraph about it. Get creative.

**Engagement Post: **Respond in a substantive way to one of your student colleagues post. If analytical, offer a different solution method or technology. Extend the conversation with news or research articles that add value to the conversation. Your post must meet the same requirements as … posted here with respect to post type.

## STATUS

#### MATH 221 Week 1: Homework Results

**Question:**The average age of all employees at a local store would … considered a:**Question:**Of all DeVry students, a study found that 43% of them are business majors. The 43% would … considered a:**Question:**The chances of winning the Maryland lottery are one chance in twenty-two million. The probability would … considered an example of:**Question:**The hair color of the players on a tennis team would … considered:**Question:**Marriage status (married, single, etc.) of the faculty at a university would … considered:**Question:**The final grades for students in a statistics class would … considered:**Question:**Every fifth person boarding a plane is asked additional security questions. This sampling technique is called:**Question:**A personal director at a large company would like to determine whether the company cafeteria is widely used by employees. She sits by the cafeteria entrance and counts how many employees enter. This study design would … considered:**Question:**Which of the following would … the mean of this data set: 5, 28, 12, 56, 4, 2, 30, 21**Question:**Which of the following would … the standard deviation of this sample data set: 67, 54, 30, 77, 61, 41, 75, 83**Question:**Which of the following would … the variance of this population data set: 3, 6, 8, 9, 4, 5, 7, 1, 9, 7, 5, 4, 3, 1**Question:**If a data set is right …… in relation to the mode?**Question:**If data set A has a smaller mean than data set B, what would … different about their distributions?**Question:**In a normally distributed data set with a mean of 24 and a standard deviation of 4.2, what percentage of the data would … between 19.8 and 28.2 and why?**Question:**Which of the following data sets would you expect to have the highest mean?**Question:**Which data outcome of the number of customers in line would best support opening another cash register?**Question:**In manufacturing, cluster sampling … to determine if the machines are operating correctly. Which of the following best describes this type of sampling?**Question:**A graph shows the ten’s digit on the left and the one’s digits on the right. This graphic is most likely to … :**Question:**Match the terms and their definitions**Question:**Match the terms and their definitions