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Descriptive Statistics

18 Problems in Statistics

1. a.11 10 8 4 6 7 11 6 11 7 b.13 23 15 13 18 13 15 14 20 20 18 17 20 13 i. Find the range, mean, variance, and standard deviation of the population data set. ii. Without calculating, which data set has the greatest sample standard deviation? Which has the least sample standard deviation? Explain your reasoning. iii.

Is the data nominal ratio, interval, ordinal

(NAME OF SURVEY) To help get the public's opinion regarding containment efforts in the Gulf of Mexico, please complete this survey and return it to July 15th, 2010 . Section One Yes No Maybe Not Sure N/A Please select one answer for each question below: Is there an oil spill in the Gulf of Mexico? Did you know about

Processing Time

Consider a worker-paced line with three process steps, each of which is staffed with one worker. The sequence of the three steps does not matter for the completion of the product. Currently, the three steps are operated in the following sequence (numbers indicate processing time of each step): Step A 3min/unit Step B 4m

Supply Chain Management and Reorder Points

You own a factory in China which makes hiking shoes and you are signing a contract with Hikee Shoe company to supply them with shoes that they will market every year in the U.S. Market. Because hiking shoe demand is highly seasonal, and also the models change every year, Hikee orders every model just once and you supply the whol

Survey Design and Describing Data

Hi, I hope you will be able to help me to understand what I'm not comprehending. Thanks much. What are some examples of descriptive statistics? Why are they used in research? How can you avoid bias when selecting samples for human services research? Text books I am using--- Rosnow, R. L., & Rosenthal, R. (2008). Beg

Statistics: distribution, correlation coefficient, variables, regression line

1. For a particular sample of 50 scores on a psychology exam, the following results were obtained. First quartile = 44 Third quartile = 68 Standard deviation = 9 Range = 55 Mean = 51 Median = 54 Mode = 71 Midrange = 64 Answer each of the following; show all work. - What score was earned by more students than

Theory Approach to Problems

In your organization's management development program, there was a heated discussion between people who claimed that theory is impractical and not effective, and others who claimed that effective theory is the most practical approach to problems. What position would you take and why?

Cross tabulations using minitab

Prepare one way tabulations of all variables using minitab. In the menu line at the top of the screen click on Stat and drag the cursor to tables. Click on tally individual variables. select all the variables in the data set by marking their names in the dialog box and clicking select. Make sure at least count is marked u

Job Satisfaction Survey: Statistical Analysis Report

See attached file. The data set for our course is a sample of a survey conducted on the population of the American Intellectual Union (AIU). It is available via the following link: Excel 2007 DataSet with DataSet Key which contains the following nine sections of data that will be used throughout our course: (1) Gender (2)

Examining Qualitative and Quantitative Data

See attached data set. The data set for our course is a sample of a survey conducted on the population of the American Intellectual Union (AIU). It is available via the following link: Excel 2007 DataSet with DataSet Key which contains the following nine sections of data that will be used throughout our course: (1) Gender

Finding the Break-Even Point: Example Problem

There is a fixed cost of $50,000 to start a production process. Once the process has begun, the variable cost per unit is $25. The revenue per unit is projected to be $45. Find the break-even point.

A Statistical Analysis Report on Job Satisfaction Survey

See attached data file. The data set for our course is a sample of a survey conducted on the population of the American Intellectual Union (AIU). (See attachment for Excel 2007 DataSet with DataSet Key which contains the following nine sections of data that will be used throughout our course) Below are the nine sections:

Descriptive Statistics in Research

I do not understand this research and statistics at all but I'm starting to learn about the different types of research and about reliability and validity. I would appreciate any help you can give. Thank you so much! What are some examples of descriptive statistics? Why are they used in research? List the three measure

MLB salaries: Data analysis using descriptive statistics (Excel)

Please see attachment This research could affect the players of Major League Baseball (MLB) and the fans. The teams that have a lower salary have a lower win rate per year this affects there draft pick they cannot afford well-known plays with high batting averages. These teams have to pick medioka players during the draft, ca

Histogram, Cumulative Graph, Percentile and Quartile: Example

The final examination of a course requires an essay. The number of pages from a sample of 25 students were collected. The data are: 5 8 9 3 12 8 5 7 3 3 8 9 5 2 7 12 9 6 3 8 7 10 9 12 7 a) Construct a histogram. Describe its shape. b) Draw a cumulative graph c) Calculate the 65th percentile d) Calculate the upper quarti

Statistics

What are descriptive statistics? What are inferential statistics? How are each used in quantitative studies? What different types of variables are used in quantitative studies? Describe each type of variable and how they differ.

Parameters for Breast Cancer Study

A recent study of breast cancer revealed that 13% of the women in the sample used antibiotics more than 500 days in their lifetime. Further, 79% of these "heavy antibiotics users" developed breast cancer. According to the American Cancer Society, one in twelve women will develop breast cancer at some time in her life. Of the num

Determining Surplus: Example Problem

A supermarket has determined that daily demand for eggs has a bell-shaped distribution, with a mean of 55 cartons and a standard deviation of six cartons. If the supermarket begins each morning with a stock of 61 cartons of eggs, approximately what percentage of days will there be a surplus of eggs?

Research and Evaluation Investigate

Business Research Problem Selection In the Week 3 Individual assignment, you will be asked to create a survey to address a business problem. For Week 2, determine the business problem you wish to investigate Provide a research problem regarding hospital food or car.

Descriptive statistics: 18 multiple choice questions

Assignment: Week 1 Ch 1 1. A quality-control manager randomly selects 90 bottles of vinegar that were filled on September 21 to assess the calibration of the filling machine. What is the population in the study? A. Bottles of vinegar produced in the plant. B. Bottles of vinegar produced in the plant on September 21. C. T

Histogram and Bivariate Plots, Value of a Slope, and Linear Regression Analysis

Three quantitative reasoning statistics questions. Problem 1: The following frequency table reports the number of employees in company using frequent flier miles (in thousands) during the first half of 2008. Table 1. Frequent Flyer Data Frequent Flier Miles (000) Number of Employees 0 up to 5 10 5 up to 10 22 10 up

Calculation of Percentage

1. Juan' school expenses Food 38%,Room 19%, Travel 6%, book 7%,and 30% If Juan could reduce his food account by 13 percentage points, what percent would his food category be? 2. What is the total percent spent on books and room?

Problems with simple sums

Please show and explain your work as best you can with the keyboard even if it is a one-step process. The table shows the sandwich choices among the county 4-H clubs. Clover Club Little Critters Club Tasty Tidbits Club Ham 6 2 4 Bol