Submitted By kdwhite9210

Words 254

Pages 2

Words 254

Pages 2

Statistics

Week 1 (Chapter 1 & 2)

Chapter 1

2. a) Ratio

b) Nominal

c) Interval

d) Ordinal

4. a) Sample

b) Population

c) Population

d) Sample

6. A sample is a portion or part of the population of interest. While population is the entire set of individuals or objects of interest or the measurements obtained from all individuals or object of interest.

8. a) Population would be used to get the overall average grade for the course.

b) Sample would be used because a large corporation over the past ten years would be way to information to locate and take way too long.

c) Sample of each because of the amount of information you are giving you don’t have to go into deep detail on each one.

d) Population to get exact number to make sure it all can be stored on the iPod.

10. Name: Nominal

Number of mins used: Ratio

Satisfaction: Ordinal

Chapter 2

2. 3 Classes. iPod, iRiver and Magic Star MP3

8. 26=64 therefore 6 classes.

i > $29 - $0 / 6 = 4.8 class intervals of 5

12. a) 5 classes

b) 10 intervals

c) 50

d) Chart below

e) Chart below

# of Visits | Frequency | Relative Frequency |

50 -60 | 4 | 4/20=.2 |

61 -70 | 6 | 6/20=.3 |

71 - 80 | 5 | 5/20=.25 |

81 - 90 | 2 | 2/20=.1 |

91- 100 | 3 | 3/20=.15 |

Total | 20 | |

16. a) 5 patients

b) 20-30 Days

c) 30 Days

d) 3

e) Frequency Polygon…...

...[pic]Chapter 1 Introduction and descriptive Statistics 1-1. 1. quantitative/ratio 2. qualitative/nominal 3. quantitative/ratio 4. qualitative/nominal 5. quantitative/ratio 6. quantitative/interval 7. quantitative/ratio 8. quantitative/ratio 9. quantitative/ratio 10. quantitative/ratio 11. quantitative/ordinal 1-2. Data are based on numeric measurements of some variable, either from a data set comprising an entire population of interest, or else obtained from only a sample (subset) of the full population. Instead of doing the measurements ourselves, we may sometimes obtain data from previous results in published form. 1-3. The weakest is the Nominal Scale, in which categories of data are grouped by qualitative differences and assigned numbers simply as labels, not usable in numeric comparisons. Next in strength is the Ordinal Scale: data are ordered (ranked) according to relative size or quality, but the numbers themselves don't imply specific numeric relationships. Stronger than this is the Interval Scale: the ordered data points have meaningful distances between any two of them, measured in units. Finally is the Ratio Scale, which is like an Interval Scale but where the ratio of any two specific data values is also measured in units and has meaning in comparing values. 1-4. Fund: Qualitative Style: Qualitative US/Foreign: Qualitative 10 yr Return...

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...Katie White Statistics Week 1 (Chapter 1 & 2) Chapter 1 2. a) Ratio b) Nominal c) Interval d) Ordinal 4. a) Sample b) Population c) Population d) Sample 6. A sample is a portion or part of the population of interest. While population is the entire set of individuals or objects of interest or the measurements obtained from all individuals or object of interest. 8. a) Population would be used to get the overall average grade for the course. b) Sample would be used because a large corporation over the past ten years would be way to information to locate and take way too long. c) Sample of each because of the amount of information you are giving you don’t have to go into deep detail on each one. d) Population to get exact number to make sure it all can be stored on the iPod. 10. Name: Nominal Number of mins used: Ratio Satisfaction: Ordinal Chapter 2 2. 3 Classes. iPod, iRiver and Magic Star MP3 8. 26=64 therefore 6 classes. i > $29 - $0 / 6 = 4.8 class intervals of 5 12. a) 5 classes b) 10 intervals c) 50 d) Chart below e) Chart below # of Visits | Frequency | Relative Frequency | 50 -60 | 4 | 4/20=.2 | 61 -70 | 6 | 6/20=.3 | 71 - 80 | 5 | 5/20=.25 | 81 - 90 | 2 | 2/20=.1 | 91- 100 | 3 | 3/20=.15 | Total | 20 | | 16. a) 5 patients b) 20-30 Days c) 30 Days d) 3 e) Frequency Polygon ...

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...If A and B are mutually exclusive events with P(A) = 0.70, then P(B) can be any value between 0 and 1. can be any value between 0 and 0.70. cannot be larger than 0.30. None of the above statements are true. If A and B are independent events with P(A) = 0.20 and P(B) = 0.60, then P(A|B) is 0.2000 In the notation below, X is the random variable, c is a constant, and V refers to the variance. Which of the following laws of variance is not correct? V(c) = 0 V(X + c) = V(X) V(X + c) = V(X) + c V(cX) = c2 V(X) Which of the following statements is always correct? P(A and B) = P(A) * P(B) P(A or B) = P(A) + P(B) P(A or B) = P(A) + P(B) + P(A and B) P[pic]= 1- P(A) An experiment consists of tossing an unbiased coin three times. Drawing a probability tree for this experiment will show that the number of simple events in this experiment is 8 Use the following information to answer questions 6 and 7: The weights of newborn children in the United States vary according to a normal distribution with mean 7.5 pounds and standard deviation 1.25 pounds. The government classifies a newborn as having low birth weight if the weight is less than 5.5 pounds. What proportion of babies weigh less than 5.5 pounds at birth? 0.0548 If the government wanted to change the value 5.5 pounds to a weight where only 2% of newborns weigh less than the new value, what weight should they use? 4.9375 pounds If you are given a table of joint probabilities of two events...

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...CHAPTER 9 [pic] Current Liabilities, Contingencies, and the Time Value of Money OVERVIEW OF EXERCISES, PROBLEMS, AND CASES Estimated Time in Learning Objective Exercises Minutes Level 1. Identify the components of the current liability category of 1 10 Easy the balance sheet. 2 10 Easy 3 10 Easy 2. Examine how accruals affect the current liability category. 4 20 Mod 5 15 Mod 6 10 Mod 7 15 Mod 8 15 Mod 3. Demonstrate an understanding of how changes in current liabilities 9 5 Easy affect the statement of cash flows. 10 5 Mod 11 5 Mod 4. Determine when contingent liabilities should be presented on the 12 15 Mod balance sheet or disclosed in notes and how to calculate their amounts. 5. Explain the difference between simple and compound interest. 13 20 Mod 6. Calculate amounts using the future value and present value concepts. 14 5 Easy 15 5 Mod 16 10 Mod 17 10 Mod 24* 10 Diff 25* 10 Diff 7. Apply the compound interest concepts to some common 18 5 Mod accounting situations. 19 10 Mod 20 10 Diff 24* 10 Diff 25* 10 Diff 8. Demonstrate an understanding of the deductions 21 15 Mod and expenses for payroll accounting. (Appendix 9A) 22 20 Mod 9. Determine when compensated absences must be 23 10 Diff accrued as a liability. (Appendix 9A) *Exercise, problem, or case covers two or more learning objectives Level = Difficulty...

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...Chapter 1 : Case Study 2 Providing any form of compensation could be taken as an offense for thousands of donor families who have already made a benevolent choice of donating organs. The proposed legislation could also end up alienating families who have decided to donate life saving organs regardless of any compensation. Many may think that offering economic benefits, wether directly or indirectly in exchange for organ donations or assigning monetary value to the human body, or body parts, is inconsistent with our values as a society. The proposed legislation could also promote suicidal behavior in people who are in need of monetary help or want to help out their family and loved ones. By offering financial incentives, there could be an increase in crimes such as organ stealing and possibly murder for receiving money for the stolen organ. These are the few issues that this proposed legislation raises. Even though the proposed legislation raises the above mentioned issues, I would still support the the bill. Providing financial incentives for organ donation might seem like it diminishes human dignity, however, it could be something worth looking into. In the normal world, people are naturally resistant to things they are not familiar with or cannot relate to. Economic incentives might force them to rethink their options about organ donation. The proposed legislation may not deter people who believe it is wrong but, it will cause a large population to consider organ...

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... three different ways. (1) Direct transfers of money and securities occur when a business (or government) sells its securities directly to savers. Here a business delivers its securities to savers, who in turn provide the firm with the money it needs. (2) Indirect transfers may go through an investment banking house, which underwrites the issue. Here the underwriter serves as a middleman and issuance of the securities. (3) Financial intermediary, such as a bank or mutual fund, is another way in which capital is transferred. Here the intermediary obtains funds from savers in exchange for its own securities. For example, a saver might give dollars to a bank and receive a certificate of deposit, and then the bank might lend the money to a small business, receiving in exchange a signed loan. 1-8 Differentiate between dealer markets and stock markets that have a physical locations. A physical location stock market, such as the New York Stock Exchange and the American Stock Exchange, physically meet and trade in a specific part of a specific building. As for dealer markets, there are “market makers” who keep inventory of the stock. Thess dealers list bid and ask quotes, which are the prices at which they are willing to sell or buy. All bids and asked prices are held in a computerized quotation system but don’t actually match buyers to sellers. Instead, traders much contact a specific dealer to complete the transaction. Nasdaq is one such market. CHAPTER 2 2...

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... is loaded with nutrients, vitamins, and amino acids. It replenishes your body and provides what you need. Each ounce of moringa contains seven times as vitamin C found in oranges four times of vitamin A of carrots calcium as milk and three times as potassium of bananas. 1 The properties of the malunggay are Antioxidant, anti-aging, anti-ulcer, estrogenic, anti-progestational, hypoglycemic, anti-hyperthyroidism, hypo-cholesterolemic, anti-hyperthyroid, anti-spasmodic. The paste of moringa leaves is said to beautify the skin and can be used by the women regularly. Moringa has other uses also in our daily living. Statement of the problem The researchers study will be conducted to know if calamansi and malunggay extracts can be use as hair conditioner. Specifically, the researchers aim to answer the following: 1. Do calamansi and malunggay extracts effective as hair conditioner? 2. What are the other effects of the calamansi and malunggay conditioner after using it? Significance of the Study The study aims to know the capability of the calamansi and malunggay as hair conditioner. Calamansi is known to have many uses like juice and seasoning to local foods. It is also a good source of vitamin C to increase body resistance. Malunggay is known as the healthiest vegetable in the world. It is rich in vitamins and nutrients that make our body healthier. The researchers will conduct a research if calamansi and...

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...1. Find a list of all 10 of Zappos corporate values. Pick two of the values and explain how you think those values would influence the way employees do their work. A. Zappos list of 10 corporate values are: Deliver WOW Through Service, Embrace and Drive Change, Create Fun and A Little Weirdness, Be Adventurous, Creative, and Open-Minded, Pursue Growth and Learning, Build Open and Honest Relationships with Communication, Build a Positive Team and Family Spirit, Do More with Less, Be Passionate and Determined, and Be Humble. If I had to pick two values from that list they would be Build a Positive Team and Family Spirit and also Build Open and Honest Relationships with Communication. I believe that these two values would have the biggest impact in developing an organizations culture. Organizational culture has been described as the shared values, principles, traditions, and ways of doing things that influence the way organizational members act and that distinguish the organization from other organizations. Organizational culture has many characteristics but the book uses 3 particular words to define culture: Perception, Descriptive, and Shared. An organizations culture cannot be physically touched or seen, the organization is concerned with how members perceive the culture and how the describe it and finally individuals with different backgrounds or work at different levels of the organization can describe the culture of the organization in similar terms. When the key...

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...Recommended exercises and solutions for chapter 1 and chapter 2 Chapter 1 E1.3 Buy or Sell? Value = $850 + $675 = $1,525 million Value per share = $1,525/25 = $61 Market price = $45 Therefore, BUY! Chapter 2 E2.1. Applying Accounting Relations: Balance Sheet, Income Statement and Equity Statement a. Liabilities = Assets – Shareholder’s equity = $400 - $250 = $150 million b. Net Income = Revenues – Expenses $30 = ? - $175 ? = $205 million c. Ending equity = Beginning equity + Comprehensive Income – Net Payout $250 = $230 + ? - $12 ? = $32 million As net income (in the income statement) is $30 million, $2 million was reported as “other comprehensive income” in the equity statement. d. Net payout = Dividends + Share repurchases – Share issues As there were no share issues or repurchases, dividend = $12. E2.2. Applying Accounting Relations: Cash Flow Statement Change in cash = CFO – Cash investment – Cash paid out in financing activities $130 = $400 - ? - $75 ? = $195 million E2.4. Preparing an Income Statement and Statement of Shareholders’ Equity Income statement: Sales $4,458 Cost of good sold 3,348 Gross margin...

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...1.22 a.all U.S cats b 1. categorical 2. categorical 3. numerical,it is discrete 4. categorical c 1.where cat food is primarily purchased? 2.whether dry or moist cat food is purchased? 3.whether the cat is pedigreed 4.which cat food brand you uasually purchase? 5.would you want to try another new brand? d 1.the number of cats living in the household? 2.how often do you purchase cat food in one month? 3.how many kilograms of cat food you usually purchase once? 4.how old is you cat? 5.how often you feed your cat in one day? 1.24 a 1.4.6.9. b 2 .3.5.7.8.10.11.12.13.14 c.2.10.13 2.78 a. [pic] b the amount of soft drink decline continuously c less than 1.894 d because we focus on the tendancy of the amount of soft drink,and the time series plot is more straight and clear than a histogram. 2.84 a |Class |midpoint |frequency |Percentage | |[0.15,0.45) |0.3 |34 |3.92 | |[0.45,0.75) |0.6 |42 |4.84 | |[0.75,1.05) |0.9 |203 |23.39...

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...Chapter 1: (10 points each) 1. Give an example of two related tables other than one in the textbook. Use the STUDENT and GRADE tables in Figure 1-1 of the textbook as an example pattern for your tables. Name the tables and columns using the conventions in the textbook. * I used MysqL workbench to create 2 tables 1- Customers that has customers with some of their information(primary key is “Customer ID”) * CREATE TABLE IF NOT EXISTS `mydb`.`Customer` ( * `CustomerID` INT NOT NULL, * `Name` VARCHAR(45) NULL, * `Email` VARCHAR(45) NULL, * PRIMARY KEY (`CustomerID`), * UNIQUE INDEX `Email_UNIQUE` (`Email` ASC)) * ENGINE = InnoDB 2- Purchases that has number of purchases that has been done by the customers(Pkey is PurchaseID, and foreign key is “CustomerID” from Customer table. * CREATE TABLE IF NOT EXISTS `mydb`.`Purchases` ( * `PurchasesID` INT NOT NULL, * `productID` INT NULL, * `PricePaid` INT NULL, * PRIMARY KEY (`PurchasesID`)) * ENGINE = InnoDB * * *note I made the customerID as the foreign key and the relationship is (1 to many) * * * Figure1 the Customer and Purchases tables’ relationship. * 2. For the tables you created in Question 1, what are the primary keys of each table? Do you think that any of these primary keys could be surrogate keys? * In Customer table the Primary key is CustomerID * In the Purchases table the primary key is...

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...Human Resource Management 10/11/15 Chapter 6 Question 1,2 Blogs and web casts allow for companies to improve their effectiveness of their recruiting for a variety of different reasons. These online blogs and web casts are essentially very cheap if not free which can allow for more money and resources to be spent on other ways to recruit well-qualified employees. Also, many potential employee's use the internet and often look for jobs on the internet so that means if employee are looking for a job online and they come across these blogs then these workers have the ability to reach out to the company themselves. Also, the way a blog or web cast is designed can draw the potential employees to their company if they are well made and are appealing to use which can also give the employee an inward look at the strengths and size of the company depending on how formidable and well-developed these blogs or web casts are. Also, web casts can allow for potential employees who are in another area to be interviewed via these web casts which allow for lower recruitment costs that may be associated with flying a potential employee in and having the employee stay in the area. Also, these technologies can communicate with employee's such as the web blog or web cast that allows for information to be easily exchanged between the two parties in a timely manner so that the employees can receive the information about applying for a position or what not. Some possible difficulties that...

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...Question 1 (22 marks) A commercial pool management company is seeking to reduce the costs of maintaining swimming pools. The maintenance cost is mostly driven by the amount of chlorine that is needed to keep the water clear and relatively free of germs. The company hired a new graduate from York University (“YorkU”) to analyze how much chlorine is needed. It is believed that the speed at which chlorine is depleted is dependent on the temperature (degrees Fahrenheit) of the water (higher temperatures use chlorine faster); pH level, which is a measure of the acidity of the water (pH ranges from 0 to 14, where 0 is very acidic and 14 is very alkaline; levels around 7.5 use the least chlorine); and weather (sunshine uses up chlorine). The YorkU graduate recorded the percentage of chlorine depletion during 8-hour days, water temperature, pH level and weather condition (mainly cloudy, sunny and partly sunny). Using Excel’s Regression Tool, the YorkU graduate obtained the following Excel output. Regression Statistics Multiple R A R Square B Adjusted R Square C Standard Error D Observations 210 ANOVA df SS MS F Significance F Regression E 6596 I 77.00 0.0000 Residual F H J Total G 10091 Coefficients Standard Error Intercept 1003 55.12 18.19 0.0000 Temperature 0.194 0.029 K 0.0000 PH Level -265.6 14.75 -18.01 0.0000 PH Level-Sq...

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...1 Qualitative | Level of Measurement | Quantitative | Level of Measurement | Make of Vehicle | Nominal | Price of Vehicle | Ratio | Year of Vehicle | Ordinal | Age of Buyer | Ratio | 2A Price of Vehicle 1. Around what price interval do the vehicles tend to cluster? * Between 20000 to under 30000. 2. How many vehicles listed for less than $25,000? * 57 Vehicles. 3. What percent of the vehicles listed for more than $30,000? * 23.8%. 4. What percent of the vehicles listed for less than $35,000? * 5%. 2B Price of Vehicle 1. Highest Outlier * 43,733.63 2. Median * 21,247.50 3. First Quartile * 15,251.75 4. Third Quartile * 26,644.50 5. Minimum Value * 5217 2C Price of Vehicle 1. The Mean * 20,329.15 2. The Coefficient of Variation * 36.07% 3. The coefficient of skewness. Is the distribution positively or negatively skewed? * -0.39 it’s negatively skewed. 3A Age of buyer 1. Around what age interval do the buyers tend to cluster? * Between 34 to Under 41. 2. Sixty-five percent of the buyers are less than what age? * 41 Years. 3. How many buyers are less than 41? * 52 Buyers. 4. What percent of buyers are more than 48? * 80%. 3B Age of Buyer 1. How many of the buyers are in their 20s? * 12 Buyers. 2. How many of the buyers are in their 40s? * 18 Buyers. 3C Age of Buyer 1. The Mean...

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...University of Phoenix Material Week 2 Practice Worksheet Prepare a written response to the following questions. Chapter 3 1. For the following scores, find the mean, median, and the mode. Which would be the most appropriate measure for this data set? 2, 2, 0, 5,1, 4,1, 3, 0, 0, 1, 4, 4, 0,1, 4, 3, 4, 2, 1 2. Based on the scale of measurement for each variable listed below, which measure of central tendency is most appropriate for describing the data? a. The time (in years) it takes a sample of students to graduate college b. The blood type (e.g., Type A, B, AB, O) of a group of participants c. The rankings of college undergraduate academic programs Chapter 4 3. An expert reviews a sample of 10 scientific articles (n = 10) and records the following numbers of error in each article: 0, 4, 2, 8, 2, 3, 1, 0, 5, and 7. Compute the SS, the variance, and the standard deviation for this sample using the definitional and computational formulas. 4. A psychologist interested in political behavior measured the square footage of the desks in the official office for four U.S. governors and of four chief executive officers (CEOs) of major U.S. corporations. The figures for the governors were 44, 36, 52, and 40 square feet. The figures for the CEOs were 32, 60, 48, 36 square feet. a. Figure the means and standard deviations for the governors and CEOs. b. Explain, to a person who has never had a course in statistics, what you have done. c...

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