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Quantative Analysis of Data

Statistical Analysis

Details: 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) Age (3) Depa

Higher Wages vs. Education Level Among Employees In A Company

Please provide an example on higher wages vs. education level using a sample population of 30 men and women. Include the following: 1) Calculate the measures of central tendency, dispersion, and skew for your data. 2) Display your descriptive statistical data using graphic and tabular techniques. a) Line graph

Statistics: Ford testing fuel efficiency; range of values. Is data skewed?

See the attached file. The following data is a result of selecting a random sample of a new Ford Testing these cars for fuel efficiency results are in mile per gallon: 39.9 28.5 35.3 32.6 33.9 40.5 28.9 30.0 33.0 26.2 35.4 26.3 33.0 25.5 33.2 28.1 37.2 28.8 Attached is Excel descriptive statistics refer

Determine Mean, Deviation and Create Histogram for Data Analysis

INSTRUCTIONS 1. Obtain the mean and standard deviation of the provided data. See below. 2. Create a histogram for data frequencies using the Microsoft® Excel® program. The bin range can be left blank. 3. Use the histogram to determine how many points are out of control according to the upper control limit and lower contr

Using the 68-95-99.7 Rule: Example Problem

Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: Suggest you make a drawing and label first. Percentage of scores less than 100 Relative frequency of scores less than 120 Percentage of scores less than 1

Computing Central Tendency and Dispersion: Example Problem

The formula for the ratio is the mileage that 14 students drive to work out of 20 students. Compute the central tendency (mean, median, mode) and dispersion (range, variance, standard deviation). Mileages 1.5 10 2 1 55 1.88 5 20 20 35 40 17 9 35


The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10. a. Compute the mean for this sample. Show your work!! b. Compute the range for this sample. Show your work!! c. Compute the variance for this sample. Show your work!! d. Compute the standard deviation for this sample. Show you

Standard deviation and sample average for student study hours

Suppose you have drawn a simple random sample of 10 students from a college campus and recorded how many hours each student studies (X) during the first week of December, 2009. Results: Student # 1 2 3 4 5 6 7 8 9 10 Hours Studied: 10 15 20 5 0 18 12 18 7 15 For this sample, compute PXi, the sample

Statistics: Testing a claim about a mean of voltage from UPS

According to a Data Set, the list measures voltage amounts obtained from the author's back-up UPS (APC model CS 350). According to the manufacturer, the normal output voltage is 120 volts. The 40 measured voltage amounts from the data set have a mean of 123.59 volts and a standard deviation of 0.31 volt. Use a 0.05 significance

Frequency Distribution Problem

What is a frequency distribution? Go to http://www.gutenberg.org/browse/scores/top and pick one of the categories. What percentages, shown at the top of the page, were the top five in that category of the total? If you were to graph the top 100, what would the graph look like? What information does this tell us if we wanted hard

Mean,Median,Mode,Range,Variance,Standard Deviation,Coeficient

For the following numbers 10 7 16 9 11 14 15 6 2 10 Calculate the a. Calculate the mean. b. Calculate the median. c. Calculate the mode. d. Calculate the range. e. Calculate the variance. f. Calculate the standard deviation. g. Calculate the coefficient of variat

Mean Difference for the Main Effect of Treatments

18. For the data in the following matrix: No treatment Treatment Male M=5 M=3 Overall M =4 Female M=9 M=13 Overall M= 11 Overall M = 7 Overall M=8 a. Describe the mean difference that is the main effect for the treatment. b. Describe the mean difference that is the main effect for gender. c. Is there an

Compute Mean, Median, Modal Selling Price, Range, Deviation

66.) 3.44 3.42 3.35 3.39 3.49 3.49 3.41 3.46 3.41 3.49 3.45 3.48 3.39 3.46 3.44 a. What is the arithmetic mean selling price? b. What is the median selling price? c. What is the modal selling price? 69.) 32 21 60 47 54 17 72 55 33 41 a. Compute the ran

When is the mean the best measure of central tendency?

Question 1: When is the mean the best measure of central tendency? When is the median the best measure of central tendency? Explain. Questions 2: A researcher has determined that the distribution of annual salaries of NBA players is bell-shaped and symmetrical about the mean salary, do you think that introducing Michael Jo

Calculating Measures of Central Tendency, Dispersion and Skew

Please help confirm that I am on the right track. See attached for data. 1) Calculate the measures of central tendency, dispersion, and skew for attached data, according to price vs. distance. 2) Display descriptive statistical data in a graph and tabular technique. Please provide frequency distribution and histogram. 3) I

9 Statistics Problems

11. For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation: 2, 2, 0, 5, 1, 4, 1, 3, 0, 0, 1, 4, 4, 0, 1, 4, 3, 4, 2, 1, 0 12. For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard devia

Stats assignment

This data represents the cholesterol levels in mg per 100 mL for 52 participants on a regular diet. 1. On the page labeled Histogram, make a frequency distribution and relative frequency distribution using 6 classes. Use this to make a relative frequency histogram. Be sure to properly title and label your graph. 2. On the

3 Statistics Problems: Mean, Standard Deviation, Percentage

Problem-1: The number of unemployed workers in the United States in recent years (in millions) is given below. [Please refer to the attachment fo the given data] a. Find the mean number of unemployed (in millions) in this period. Which year has unemployment closest to the mean? b. Find the standard deviation for the

Times of Populations Ranges

Please see attached file. Exercises 80, 82, and 87 (Ch. 3) 80). Creek Ratz is a very popular restaurant located along the coast of northern Florida. They serve a variety of steak and seafood dinners. During the summer beach season, they do not take reservations or accept "call ahead" seating. Management of the restaur

Probability of Random Selection

1. Assume that a class length between 50.0 min and 52.0 min is randomly selected, and find the probability that the given time is seletced. Between 50.5 min and 51.8 min 2. Assume that voltages in a circuit vary between 6 volts and 12 volts, and voltages are spread evenly over the range of possibilities, so that there is a

Descriptive Statistics: Flight times

The Apollo space program lasted from 1967 until 1972 and included 13 missions. The missions lasted from as little as 7 hours to as long as 301 hours. The duration of each flight is listed below 9 195 241 301 216 260 7 244 192 147 10 295 142 Explain why the flight times are a population. Find the mean and median

AAA Gas Price Statistics: Arithmetic Mean, median, and modal

The American Automobile Association checks the prices of gasoline before many holiday weekends. ... during the May 2003 Memorial Day weekend in the Detroit, Michigan, area. .... before many holiday weekends. Listed below are the self-service prices for a sample of 15 retail outlets during Labor Day weekend of 2007 in the detroit

Statistics: Describe terms with examples.

Describe, in your own words, the following terms and give an example of those terms marked by asterisks. Your examples are NOT to be those given in the lecture notes, or provided in the textbook. a. Mean* b. Median* c. Mode* d. Range* e. Standard deviation* f. Variance g. Percentile* h. Standard score* i. Symm

Statistical Process Control Transactions

See the attached file. Token thickness and Bank transaction problem to excel worksheet. A bank has determined that an average transaction time of sixty seconds with a variation of plus or minus five seconds for automated teller machines (ATM's) is expected. A survey shows the following transaction times.

Research Question analysis

Based on an analysis of the last six months sales your boss notices that sales of beef products are declining in your chains restaurants. As beef entree sales decline, so do profits. Fearing beef sales have declined due to several newspaper stories reporting E coli contamination discovered at area grocery stores, he suggests a s

Xbar and R charts Report

As a quality analyst you are also responsible for controlling the weight of a box of cereal. The Operations Manager asks you to identify the ways in which statistical quality control methods can be applied to the weights of the boxes. Provide your recommendations to the Operations Manager in a page in a half report. Base the rep