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Descriptive Statistics

Multiple Regression Analysis and Time-Series Forecasting...

See attached file for questions 14.5, 14.7, 14.25, 14.41, 14.43, 14.49, 16.7, 16.13, 16.15, 16.47 Please provide a detailed explanations in the answer to the questions, showing: 1. all work in excel 2. explanations in MS word 14.5 A consumer organization wants to develop a regression model to predict mileage (as measu

Statistics: Relationship between age and math skills

See attached file for format of tables. Demographic information on incoming graduate students are in the table below. Faculty are wondering if there is a relationship between age and the math skills (high scores indicate higher skill levels) of these incoming students. What would you conclude? Age Math Skills 23 25 30

Equations for Cost and Profit

A small retail store owner has calculated the monthly over head costs at $1,000, and additional operating costs are estimated at $0.12 per dollar of sales. Based on this data the owner has decided to mark-up all items 45% on retail for the coming year. 1. At what annual dollar volume of sales will the store break even? 2. W

Expected Monetary Value for Investing in Stocks

A person is considering investing in stocks, bonds, or gold. The possibility exists that the person will not do anything. The payoff table for this is given below. The payoffs represent profits. State of Nature A B C Invest in Stocks -100 -200 1000 Invest in Bonds 350 300 200 Invest in Gold 150 250 300 Do Nothi

Central Tendency Measures: Average Level of Reading Ability

A researcher tested the reading ability of two groups of primary care patients. The scores on the test range from 1 to 9 with 9 indicating a high degree of reading ability and 1 very limited reading ability. The researcher is interested in knowing the average level of reading ability for each group separately and for the sample

Descriptive Statistics Consultant

A statistical consultant was retained by a linen supplier to analyze a survey of hospital purchasing managers. After looking at the data, she realized that the survey had missed several key geographic areas and included some that were outside the target region. Some survey questions were ambiguous. Some respondents failed to ans

Bond Rating Services

Bond Rating Who are the rating services and what are their bond ratings? Based on the ratings, what are the differences between investment grade bonds and junk bonds? What do the ratings mean and how important are the ratings when buying a bond? When would buy an investment grade bond? When would you buy a junk bond?

Path- Distance (Shortest Route)

Consider the following shortest-route problem involving seven cities. The distances between the cities are given below. Draw the network model for this problem and formulate the LP for finding the shortest route from City 1 to City 7 Path Distance 1 to 2 6 1 to 3 10 1 to 4 7 2 to 3

The temperature in December in Buffalo , New York , is often below 40 degrees Fahrenheit (4 degrees Celsius). Not surprisingly, when the National League Buffalo Bills play at home in December, coffee is a popular item at the concession stand. The concession manager would like to acquire more information so he can manage inventories more efficiently. The number of cups of coffee sold during 50 games played in December in Buffalo were recorded. The results are in file Xr04-84.

The temperature in December in Buffalo , New York , is often below 40 degrees Fahrenheit (4 degrees Celsius). Not surprisingly, when the National League Buffalo Bills play at home in December, coffee is a popular item at the concession stand. The concession manager would like to acquire more information so he can manage inventor

Finding the Expected Value of Raffle Tickets

The symphony sells raffle tickets each year to raise money. Assume they sell 2000 tickets and the tickets cost $100 each. The top prize is a $50,000 car and the second prize is a $5,000 gift certificate from a jewelry store and the third prize is a $1,000 shopping spree at an area mall. Find the expected value of buying a raffle

Feedback on descriptive statistics

1. What are some examples of descriptive statistics? Why are they used in research? What is a confidence interval? 2. How can you avoid bias when selecting samples for human services research? List the three measures of variability and provide one example of each. If in a response team, what may these measures of variab

Sampling Methods, Frequency Distribution, Stem & Leaf Plot

See attached file graphs. 1. Given the situation described, identify the type of sampling involved. At a newspaper office, staffers are classified by the department in which they work. Then random samples from each department are taken. a. random sampling b. systematic sampling c. convenience sampling

Types of Data Points: Moms Delivering Newborns

What are some other data points that we can collect for moms who deliver? I'll start us out with a couple of examples: * Weeks of gestation at time of delivery * How many visitors the patient had * Weight of baby at birth

Various Descriptive Statistics Questions

The following data lists the average monthly snowfall for January in 15 cities around the US: 42 45 8 18 45 15 31 46 3 33 2 6 32 47 36 Find the mean, variance, and standard deviation. Please show all of your work.

statistics

Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Class Frequency 36-38 18 39-41 7 42-44 12 45-47 22 48-50 13

What factors contribute to a skewed distribution?

What factors contribute to a skewed distribution? Provide an example, not from the text, that might have variables that would skew the data and graph of data points. Note: Please see your text on what skewed (left/right) graphs mean for the data. It does not mean that the data was made up or collected incorrectly.

Descriptive Statistics Example Questions

What are some conditions under which business decisions are made using subjective probability concepts? Give examples of subjective probability. Give three different examples of where you might apply descriptive statistics in a workplace. Explain why each is appropriate for the data you are describing. Where might you use

Inferential and Descriptive Statistics

What are the main differences between descriptive and inferential statistics? Provide an example of either type of statistics either from a recent study you heard about or a made up study you'd be interested in learning about.

Organizational Development and the Role of a Consultant

What is the role of an OD (Organizational Development) consultant as a change leader? What are the core competencies of an OD professional? Is their any value in reviewing theoretical literature in OD that can provide a theoretical framework or is it purely by experiences? What relationship, if any, exists between theory and p

Females in Language Arts Programs

Please help with the following problem. What percentage of the grand total of students are females in the Lang Arts program? How would you interpret the relationship between gender and majors in this graph? List the percentages of students in each major area as compared to the grand total. degree