W1 Discussion Topics Essay

1715 words - 7 pages

This week there are four discussion topics. Complete by the due date and you will have a second chance to fix mistakes and resubmit for a second review and increased points.

Name:

DT1 DESCRIPTIVE STATISTICS

Please read and understand before responding

Topics: Central Tendency, Variability (Dispersion), Quartiles, normal data and skewed distribution of a single data group. You will want to know what measure to use when data distribution is normal (symmetrical) and when the data distribution is significantly skewed. We will work with six measures, mean, median, mode, standard deviation, interquartile range (IQR), and range. You may use a web search or the textbook.

Textbook: ...view middle of the document...

Explain the strengths and weaknesses for each measure of variability: a) Standard Deviation, b) Range, c) Interquartile Range 

Standard Deviation
Advantages – Shows better picture of results than from the mean alone
Disadvantages – Doesn’t show full range of data, and can be effected by outliers

Range
Advantages – Shows the spread of the results
Disadvantages – Doesn’t consider clusters of results. Effected by outliers more than any other variability.

Interquartile Range
Advantages – Doesn’t show extreme values. Can also measure variability if extreme values are not recorded exactly
Disadvantages – No open to manipulation

D. Choose the best measure to use when data is normal? Choose the best measure to use when data is significantly skewed? 

The range would be a good method to use for normal data. However standard deviation would be best because of its usefulness of the scatter of observations. If observations follow normal distribution, a range covered by one SD above the mean and one below included 68% of the observations. A range of two and two would be about 95%, and a range of three and three would be about 99% of the observations.

Normal data has outliers. Range would pick the min and max points, thus would not be a good choice. Best: Standard deviation.

Skewed data. The standard deviation uses the mean in the calculation. Best: interquartile range.

Shape (Skewness)

E. Skewness may be caused by data favoring one side of the mean, from outliers, or the data is not normal. 
    Answer #1 or #2:

1. Give an example when data favors one side of the mean.

During a sports players’ career, as he/she is younger, their statistics would most likely be better during their first few years of playing, while the last half of their career would most likely see a decline. A positive skew.
[pic]

2. Give an example of data that has extreme outliers.

When a ball player plays a period of time without using performance enhancing drugs he/she will be most likely consistent year after year. However, if that same player uses these PED’s and has a astonishing season of play, those numbers (in baseball most likely home runs) would show as an extreme outlier.
DT2 IDENTIFYING LEVELS OF MEASUREMENT

Please read and understand before responding

Topics: Four types of levels of measurement (scales) of data classification. Learn that data levels are either numeric or non-numeric. Learn about the two sub-categories for each level. You may use a web search or the textbook.

Numeric Interval, Ratio
Attribute: Nominal, Ordinal

Textbook:
McClave Ch. 2 p. 2, Types of Data
Cooper & Schindler Ch. 11, pp. 273-278 Measurement Scales

Instructions: 
Consider each Part as a single question on a survey questionnaire. 

a. Select whether your answer would produce attribute or numeric data, then decide on nominal, ordinal, interval, ratio if you can. 

b. Why did you make that your choice? This helps me to understand...

Other Papers Like W1 Discussion Topics

Freedom And Responsibility Essay

2141 words - 9 pages Built within the Constitution of the United States are specifically defined freedoms that are guaranteed to all citizens. Conversely, with every constitutional freedom there comes a corresponding responsibility. On September 25, 1789, the state legislature’s twelve proposed amendments were transmitted by congress, the first two dealing with congressional representation and congressional pay. The following numbers three through twelve were

Hate Crime Laws Essay

2348 words - 10 pages On June 7, 1998, 49-year-old James Byrd Jr. of Texas accepted a ride from three white men, who then beat him severely, urinated on him, chained him by his ankles to the back of their pick-up truck, dragged him for three miles into the countryside, and dumped his corpse in front of an African-American cemetery (Graczyk). A little over a year later, a jury sentenced ring leader John King to death by lethal injection (“Man Executed for Dragging

Rational Emotional Behavior Therapy Case Study Conceptualization And Treatment Plan

2140 words - 9 pages Rational Emotional Behavior Therapy Case Study of Sarah: A Conceptualization and Treatment Plan Rational emotive behavior therapy, REBT, was developed by Albert Ellis and holds the central belief that the events in our lives do not cause our disturbances but that they are instead caused by our view of the events (Murdock, 2009). Murdock (2009) states that “people are seen as responsible for their behavior” (p. 279) but, because they are

Holidays In Albania

1636 words - 7 pages Have you ever thought about having exciting and incredibly cheap vacations? Albania might be the right choice. According to My Travel Guide, Albania is ranked the fourth among ten places worth visiting in Eastern Europe (“Top 10 Eastern European Destinations”). One can encounter three kinds of vacations in this Mediterranean country: winter, summer, and cultural. The ideal places to spend your winter vacations are the Albanian Alps. They are

A Heart Of Darkness

1748 words - 7 pages In this short story, there are frequent significant subject and ideas that make the story, "A Heart of Darkness," by Joseph Conrad, and haunting novel. The main theme is absolute white power over the natives. The theme validates the corruption, and the dependence caused by the white people as they took over the Congo. White men were giving all the power; they had no self-control, and in the end they did not use wisely. The white men became

The Aspects Of Vulnerability Among The Exploited In Medical Research

2287 words - 10 pages Essentially, everyone is in some state of vulnerability. However, some of us are more susceptible to harm due to our vulnerabilities. The susceptible are the individuals with the greatest risk. These individuals risk the loss of their autonomy, and maybe even their lives. Vulnerable populations can be found in every subset of society. However, as previously mentioned, there are some vulnerable populations that are at an even greater risk than

The Hitchhiker’S Guide To The Galaxy

1171 words - 5 pages no attempt to quantify the universe, and began with an artificial understanding of his environment. On the other hand, Arthur’s previous disregard for the universe portrays the human tendency to ignore what they can’t understand very well. Soon after Arthur’s rescue, “Trillian couldn’t sleep… Zaphod couldn’t sleep… Ford couldn’t sleep… Arthur slept: he was terribly tired,” (Adams 95). After witnessing the Earth discussion, meeting two aliens and

The Ford Motor Company Wage Increase Of 1914 And The Theory Of Incentives And Efficiency Wages

1252 words - 6 pages ‘It’s not the employer who pays the wages. Employers only handle the money. It is the customer who pays the wages’ (Henry Ford, cited in Johnson and Weinstein 2004, p. 2). When the Ford Motor Company announced that it would more than double the wages of its workers in January 1914 to a ‘five-dollar day’ minimum, was this a contradiction to Henry Ford’s statement? If customers are actually the ultimate payers of wages, then more than

Historical Analysis Of The Economical Breakthroughs Of The Industrial Revolution

1396 words - 6 pages A Historical Analysis of the Economical Breakthroughs of the Industrial Revolution During the Industrial Revolution, many elements of society experienced huge breakthroughs that would change the way they functioned forever. Economics were definitely one of them. With many new inventions and many factories appearing, many, many, more resources were being created than ever before. Also, all of the revenue from these resources was being given to

Leadership Portrayed in Monologue from Shakespeare’s Henry V

1214 words - 5 pages Leadership is defined as a socially constructed process and which also affect organizational future outcomes. Leader is someone at high position who have overall duty for an organization, she or he decide what to do and the way how to achieve it. (Carter and Greer, 2013)The role of leader is extremely important for an organization, leader use their own power to influence the followers though many different ways such as motivation in order to

Cuba Civil Rights

1906 words - 8 pages Picture a country that has limits on how much you can make random government imprisonments and more what do you do. That is the situation for the eleven million seventy-five thousand two hundred forty-four people of Cuba since the takeover of Fidel Castro. The US is opposed to Castro taking control of Cuba. Castro managed to ease the United States nerves when he said that Cuba was against all forms of communism. According to Lana Wylie the Union

Related Essays

Acc 291 Syl Essay

2383 words - 10 pages | | | | |Problem P11-8A | | | |Learning Team |Discuss the objectives for Week Four. Your discussion should include the topics you feel | |2 | |Weekly Reflection |comfortable with, any topics you struggled with, and how the weekly

Syllabus Essay

3437 words - 14 pages . Call 1-877-832-4867, or use the e-mail support form. For answers to the most common issues, go to “Knowledge Base” by clicking Help, found at the top of every student Web site. Course Description See eCampus. Course Topics & Objectives See eCampus. Course Materials See eCampus. Participation In an intensive, collaborative learning environment such as that of University of Phoenix, class attendance is perhaps the most obvious and

Entrepreneurship Plan Essay

2617 words - 11 pages : | | | |FIVE (5) to SIX (6) compulsory essay questions. | | | |The topics to be tested will be from Topic 1 to Topic 6 stated in the lecture scheme. | | | |The mid-semester test will be conducted in WEEK 3 (14th November 2015

International Economies Theory Essay

4241 words - 17 pages chapter now contains our model of intertemporal trade. Global equilibrium is analyzed using the relative supply–relative demand framework rather than offer curves. Chapter 8, Firms in the Global Economy: Export Decisions, Outsourcing, and Multinational Enterprises The second half of this chapter is entirely new and covers important recent research advances on the role of firms in international trade. Among the topics we feature are new models with