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Quantative Analysis of Data

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

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

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

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

Statistics: Deviation, variance, mean score, mean, median, mode

Consider the data 8, 6, 7, 7, 9, 4, 8. What is the variance? Given the following sentences in years for vehicular manslaughter group of 27: Sentences f 10 1 9 0 8 4 7 8 6 1 5 3 4 3 3 3 2 2 1 2 What is the mean score? Consider the data 8, 6, 7, 7, 9, 4, 8. What is the standard deviation? The scores on a cr

Math and Real World Problems

In management, how important is it that we learn to use math to solve problems? How valuable is an MBA degree without the ability to identify the cost of a company's capital, the return on investment, the gross margin percentage, the break-even point, or even what percent of a population would be willing to buy our product?

Quantitative Methods

1) The following table shows nominal GDP and an appropriate price index for a group of selected years. Compute real GDP. Indicate in each calculation whether you are inflating or deflating the nominal GDP data. Year Nominal GDP, Price Index 1960 $ 527.4 22.19 1968 911.5


1. A bank located in a commercial district of a city has developed an improved process for serving customers during the noon to 1:00PM peak lunch period. The waiting time (as defined as the time the customer enter the line until he or she is served) of all customers during this hour is recorded over a period of 1 week. A random

Statistics for Producing Power Drinks

Assume NJD Bottling is a company producing power drinks. You visited the company and did a sampling of 15 bottles to figure out the average volume of the bottle. You recorded the following data: 17, 16, 17.5, 16.7, 17.3, 15, 17.2, 17, 17.2, 16.8, 17.3, 16.9, 17.4, 17.7, 17.1 a- Find the mean, median mode of the da

Statistic proba


Differnce & Mean Difference of Scores

Calculate the difference scores for the following data from a repeated-measures study. Subject--Treatment#1--Treatment#2-- Difference Scores A 34 44 _________? B 41 39 _________ ? C

Application of Descriptive Statistics and Inferential Statistics

Provide an example from your work or home life; illustrate the difference between the application of descriptive statistics and inferential statistics. What type of information would you be looking to obtain with inferential statistics and which tools might you use to achieve that?

Statistics: Reaction time for groups of dogs

An animal trainer obtained the following sample data (Table A) in a study of reaction times of dogs (in seconds) to a specific stimulus. He then selected another group of dogs that were much older than the first group and measure their reaction times to the same stimulus. The sample data is shown in Table B. Table A