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# Descriptive Statistics

### 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

### What is data mining? When would you use descriptive statistics? What is a regression analysis?

I am trying to understand the meaning of data mining? What is data mining? I'm thinking it's like a huge warehouse that stores data. Is it possible to provide an example? Can you also recommend any literature about data mining? I would also like to know what type of research situation would use only descriptive statistics

### A) Run descriptive stats on the data. b) Comment on the results and interpret them; what do they indicate?

The following table gives the percentage of high school seniors who took the SATs in the academic year ending in 2003 for a group of 14 southeastern states and Washington DC. State % Taking the SAT MS 4 AR 6 LA 8 AL 10 KY 13 TN 14 WV 20 SC 59 FL 61 GA 66 MD 68 NC 68 VA 71 DE 73 DC 77 a) Run descriptive

### Statistics: overall survival rates for breast cancer in provincial v teaching hospitals

See attached file. The table below shows fictitious data about the number of survivors and percentage survival of breast cancer victims in March 1999. The data are grouped according to the extent of the disease at the time of diagnosis and the type of hospital (provincial or teaching) where the woman was treated. Extent of

### Examples of Abuse or Misuse of Statistics; examples of use of descriptive statistics

1. Please share 2 real world examples where you believe Statistics was "abused" or "mis-used" to further a point or a cause. These can be intentional or intentional cases. Again, if you do not have examples from your organization, please feel free to interview someone or research off the net or library. 2. How could you use

### Shear's Insurance Agents

The insurance department at Shear's has two agents, each working at a mean speed of 8 customers per hour. Customers arrive at the insurance desk at a mean rate of one every six minutes and form a single queue. Management feels that some customers are going to find the wait at the desk too long and take their business to Word's,

### Indicators of societal well-being

There is constant discussion by companies and various philanthropic groups surrounding actions that are made for the "well-being" of society. What are two types of data you might use to measure this concept of the "well-being" of society?

### Calculating descriptive statistics

The following sample was obtained from a population with unknown parameters: Scores 1,5,1,1 a) Compute the sample mean and standard deviation b) Compute the standard error of the mean

### Why use graphs and charts? What level of data is money? Histograms v bar charts.

Why do you use graphs and charts to represent information? What level of data is money? Explain. What distinguishes a histogram from a bar chart? What level of data is a social security number?

### Fundamentals of Statistics: AIU Job Satisfaction Data Set

See attached data set 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: DataSet with DataSet Key which contains the following nine sections of data that will be used throughout our course: (1) Gender (2) Ag

### Mean and Median as the Best Measures of Central Tendency

When is the mean the best measure of central tendency? When is the median the best measure of central tendency?

### When to Use Descriptive Statistics vs. Inferential Statistics

When would you use descriptive statistics rather than inferential statistics? Provide a specific scenario and explain your rationale.

### Statistical Analysis of Job Satisfaction Survey Data and Interpetation of Results

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: DataSet with DataSet Key which contains the following nine sections of data that will be used throughout our course: (1) Gender (2) Age (3) Department (4) Position

### Calculation of Test Statistic, P-Value, Expected Value and Measures of Central Tendency

1. NBC TV news, in a segment on the price of gasoline, reported last evening that the mean price nationwide is \$1.50 per gallon for self-serve regular unleaded. A random sample of 35 stations in the Milwaukee, WI, area revealed that the mean price was \$1.52 per gallon and that the standard deviation was \$0.05 per gallon. At the

### Statistical Data Analysis using Excel

See attached file. Assume you are researching about housing in a neighborhood encompassed by 5 townships in the attached Real Estate Data Set (Excel). Evaluate if the distance from center of town the homes are located creates a positive, negative or neutral change in the price of the home. Data analysis using descriptive

### Statistics frequency distribution: Electricity cost for apartments in Albuquerque, NM

Using excel The following frequency distribution reports the electricity cost for a sample of 50 two bedroom apartments in Albuquerque, New Mexico during the month of May last year. Electricity Cost Frequency \$ 80 up to \$100 3 100 up to 120 8 120 up to 140 12 140 up to 160 16

### Mean calculation for 50 executives laid off from previous positions

A recent survey of 50 executives who were laid off from their previous position revealed it took a mean of 26 weeks for them to find another position. The standard deviation of the sample was 6.2 weeks. Construct a 95 percent confidence interval for the population mean. Is it reasonable that the population mean is 28 weeks?

### 10 Statistics Problems: 8 Fortune 500, students, 4-year, NFL, guitar neck, exam scores

See attached Minitab sheet for use with one of the questions. Please us either Excel or Minitab to answer the questions, where necessary 1. The following information regarding the top eight Fortune 500 companies was presented in a recent issue of Fortune Magazine. Sales Sales Profits Profits Company

### Various Calculations Given Time Series of IBM Stock Prices

1. Download time series of daily and monthly prices for IBM for 1963-2009. 2. Compute the sample mean, median, variance, skewness, kurtosis, min, and max for continuously compounded, i) daily and ii) monthly returns. Compare the same for simple returns. a. Are there any differences in skewness of daily and monthly returns?

### General Aviation: plot data, discuss pattern, fitted trend, forecast

Instruction: ? a) Plot the data ? b) Discuss the pattern and possible causes ? c) Would a fitted trend be helpful? ? d) Does 1992-2003 graph suggest fitted trend can predict 2004? ? e) Fit a trend model to 1992-2004 data ? f) Make a forecast for 2004 ? g) Why is it best to ignore earlier data? The t

### Decision analysis: Maximax and Maximin

The owner of the Burger Doodle Resturant is considering two ways to expand operation: open a drive-up window or serve breakfast. Th increase in profits reulting from theise proposed expansions depend on weather a competitor opens franchise down the street. The possible profits form each expansioin in operations, give both fu

### Statistics - Basic Analysis - SPSS

The first part of this Application is your analysis using SPSS. To conduct your quantitative analysis, use your course text, (a) Selecting appropriate variables based on type (nominal, ordinal, or scale), calculate descriptive statistics. At the very least, calculate a mean, median, and standard deviation. Be sure to save

### X-bar and R-bar Charts for a Manufacturing Process

A new machine has just been installed to cut and rough-shape large slugs. The slugs are then transferred to a precision grinder. One of the critical measurements is the outside diameter. The quality control inspector randomly selected five slugs each hour, measured the outside diameter, and recorded dthe results. The measurement

### Using Descriptive Statistics in the Work Place

Can you give me a brief example of how I can routinely use descriptive statistics in the work place. Include a description of work, the way in which I could calculate the statistics and how the statistics are used in a work.