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    Descriptive Statistics

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    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.


    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

    Analysis project

    1. Analyze that data set: For this part, if you are male use the male variable; if you are female use the female variable. a. Determine the center of the data using the mean, mode, and median. b. Determine measures of variation (range, standard deviation and variance). c. Determine the quartiles. d. Determine the IQR (Inn

    Quantitative reasoning and descriptive statistics

    Please submit an annotated bibliography of 5 articles, website materials, or book chapters you have surveyed while searching for sources related to your chosen area of research. For at least one of your sources: Describe the source's use of descriptive statistical measures you learned about in this module. Describe the

    Measures of Central Tendency for Experienced vs. Educated

    Calculate the measures of central tendency, dispersion, and skew for your data. Prepare you paper examining the data you have collected, and drawing conclusions based on your findings. In your paper, be sure to include the following: a. Data analysis using descriptive statistics 1) Calculate the measures of centra

    Statistics: Average distance walked; Severity of facial wrinkles in middle age

    1. A researcher studies the average distance that 130 people who are living in U.S. urban areas walk each week: What is the size of the sample? Identify the population. 2. Is the "average" calculated in #1 a descriptive statistic or an inferential statistic if it is used to describe the 130 people studied? 3. Referenci

    Excel spreadsheet to format Jane Doe's medical expenses

    See attached file. I need help calculating medical expenses that have been paid for Jane Doe (the plaintiff in a personal injury case). Using Excel. I have attached medical invoices for 5 companies that have paid expenses for Jane Doe. Jefferson has 2-pages of expenses paid Shannon has 1-page of expenses paid Bradley

    Descriptive Statistics, Normal Distribution

    1. PTY Company has experienced the following numbers of losses in the past 10 years: 3, 4, 3, 3, 1, 0, 2, 2, 3, 3. Calculate the mean, median, mode, variance, standard deviation, and coefficient of variation for this loss experience. 2. MDC Corporation's losses are assumed to be distributed normally, with a mean of $10,000 an


    See attached data file. In each of the assignments in this course, you will be dealing with the following scenario: American Intellectual Union (AIU) has assembled a team of researchers in the United States and around the world to study job satisfaction. Congratulations, you have been selected to participate in this massive g

    Applying the Box Method and Fundamental Counting Principle

    Five college engineering students are choosing specialized fields of engineering to study. Each student is allowed to select one field. The available fields are Electrical Engineering (EE), Mechanical Engineering (ME), and Computer Engineering (CE). If the second student does not meet the requirements for ME and the third st

    Statistical Analysis

    You run a small Internet business and are concerned about customer support service levels on the Help Desk. You want to know how many calls per day are handled by your help desk staff. You collect the data at left over a 90-day period. Use appropriate descriptive statistics to make sense of this data. Use an appropriate grap

    Significance of a random sample size

    If a random sample of 10 people found that 9 were pro-life (that is, 90 percent), while another random sample of 1,000 people from the same population found that 550 were pro-life (that is, 55 percent), which would you find more significant? Why?

    Descriptive Statistics: Tea-Bag-Filling Process

    A quality characteristic of interest for a tea-bag-filling process is the weight of the tea in the individual bags. If the bags are under filled, two problems arise. First, customers may not be able to brew the tea to be as strong as they wish. Second, the company may be in violation of the truth-in-labeling laws. In this ex

    Quantitative Reasoning Example Problem

    1. When using linear regression analysis what are we attempting to measure? Explain how this measurement can help in a business decision. 2. Go to the following website and participate in the interactive problems on Histograms and then post feedback. http://www.cals.ncsu.edu/gn/ex/samphist.html

    Descriptive Statistics

    1. US housing prices reached their peak in July of 2006. The following data shows the ratio of the prices reported in a recent month to the July 2006 figure. These are to be used to represent typical amounts of decline from that peak for 20 cities. Phoenix Los Angeles San Diego Denver Washington Miami Tampa Atlanta

    Maximum Life of a Tire to Qualify for a Replace

    A tire company is considering a tire replacement program.They have agreed to replace any tire that fails with a life in the bottom 10% of the population. For a given population of tires, the life is normally distributed with a mean of 27 months and a standard deviation of 3.8 months. What will be the maximum life of a tire to

    Statistics: Test for weight of package of cereal

    A study was conducted on the weight of cereal in ounces placed in the package. The mean was found to be 12.05 ounces with a standard deviation on 0.17 ounces. Assuming the weight of cereal is normally distributed, determine the likelihood that a package will contain more than 12.2 ounces? Round your final answer to four

    Queuing theory: customer wait times

    The average time T a customer waits to get his food cooked is related to the average number of orders N by the relation T = 1 + N^2. What is the maximal order arrival rate lamda* that the cook can sustain?

    Stats: Standard error of estimate

    Which of the following is true about the standard error of estimate? Choose the right answer: a. It is a measure of the accuracy of the prediction b. It is based on squared vertical deviations between Y and Y` c. It cannot be negative

    Multiple Regression Analysis & Scatter Plots in Excel - Traffic Fatalities

    A group of legislators wanted to look at factors that affect the number of traffic fatalities. They collected some data for 1994 from the National Transportation Safety Board on the number of fatalities for 50 states and the District of Columbia (DC), the number of licensed drivers, the number of registered vehicles, and the num

    Pate's Pharmacy level of lighting in the greeting card department

    Pete's Pharmacy Inc operates a regional chain of 120 pharmacies. Each pharmacy's floor floor plan includes a greeting card department which is relatively isolated. Sandra Royo, Marketing Manager, feels that the level of lighting in the greeting card department may affect sales in that department. She chooses four levels of light