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# Quantative Analysis of Data

### Measurement Scales

For the following measurement scales, indicate the measures of central tendency that are appropriate. a. nominal scale b. ordinal scale c. interval scale d. ratio scale

### Normal Distributions and Standard Deviation: Example Problems

According to the 1996 Statistical Abstract of the United States, 7.6% of the scores on the verbal portion of the Scholastic Aptitude Test (SAT) exceeded 600. Approximately, 42.3% of the cores were less than 400, according to the same reference. Assuming that scores on the verbal portion of the Scholastic Aptitude Test are approx

### Statistics Problems: Standard Deviation & Regression Equation

An instructor wants to figure out if a student's score on the first exam is correlated with their score on the final exam or if they predict the final exam. Below are the figures for 10 randomly selected students from her class. (25 points) Student First Exam, Final Exam,

### Mean, median, mode, regression line, standard error of the estimate

1. In a study of age and systolic blood pressure of five randomly selected subjects, a researcher reported the following data. (25 points) Subject # Age, x Pressure, y 10 6 5 12

### Quantitative Methods

The Willow Furniture Company produces tables. The fixed monthly cost of production is \$8,000, and the variable cost per table is \$65. The tables sell for \$180 a piece. For a monthly volume of 300 tables, determine the total cost, total revenue, and profit. Determine the monthly break-even volume for the Willow Furniture

### Standard Deviation & Bell-Shaped Curve

What does the standard deviation unit really represent? Is the distinction among various parts of the bell-shaped curve arbitrary or is there certain logical and rational principle involved that creates such distinctive demarcations shown in a chart like this?

### Sample Mean and Confidence Intervals

Find the confidence interval at 95%, than at 99%, using the sample mean of the following problem. From a sample of 30 responses on a 7 point scale, measuring whether an extremist hate group should be given a permit to demonstrate ( 1 = strongly oppose though 7 = strongly favor). 3 5 1 4 3 3 6 6 2 3 3 1 1 2 2

### AIU case study: examine qualitative and quantitative data and write a professional report

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

### How to Measure the Data That I Collected

1) Can you explain to me what categories and types of data I collected? 2) Would a frequency distribution table be appropriate for displaying my data? Please explain yes or no to help me understand. 3) Please show me how to create and submit an illustrative frequency table to show how such a table might look

### Descriptive statistics and charts..

Part 1: (20 Points) Moore Travel Agency, a nationwide travel agency, offers special rates on certain Caribbean cruises to senior citizens. The president of Moore Travel wants additional information on the ages of those people taking cruises. A random sample of 70 customers taking a cruise last year revealed these ages. 57 77

### Calculation of descriptive statistics and histogram in Excel.

Using the Excel program, enter the data below onto a worksheet. Then touch the Paste Function button on the toolbar. You'll get a menu. On the left side of the menu, select "Statistical." This will make the right side show all the statistical tests you can do with EXCEL. Pick "average" and it will calculate the mean, pick "stand

### Statistic Problem in Business and Economics

The Appliance Center sells a variety of electronic equipment and home appliances. For the last four years the following quarterly sales (in \$ millions) were reported. Quarter Year I II III IV 2000 5.3 4.1 6.8 6.7 2001 4.8 3.8 5.6 6.8 2002 4.3 3.8 5.7 6.0 2003 5.6 4.6 6.4 5.9 Determine a typical seaso

### Pricing and Sales Volumes

The following uses the files EXAM.XLS and Developing_Country_Pricing.PDF. In this simulation, you are about start selling a new product, an MP3 player (YourPlayer). Management has provided you with a proforma income statement to help assess the viability of the product. They need your help to complete the income statement.

### Mean, Median and Mode

The final grades for a random sample of MKT 380 students are as follows: Students Final Grades Student A 70 Student B 85 Student C 90 Student D 93 Student E 97 Student F 80 Student G 85 Student H 88 a. What is the mean for these data? b. What is the mode for these data? c. What is the

### Continuous Random Variables

A. Which of these variables are discrete and which are continuous random variables? 1. The number of new accounts established by a salesperson in a year. 2. The time between customer arrivals to a bank ATM. 3. The number of customers in Big Nick's barber shop. 5. The amount of fuel in your car's gas tank. 6.The number

### Basic Statistics for Business and Economics

60. Owens Orchards sells apples in a large bag by weight. A sample of seven bags contained the following numbers of apples: 23, 19, 26, 17, 21, 24, 22. a. Compute the mean number and median number of apples in a bag. _ b. Verify that (X - X) = 0. 62. The Citizens Banking Company i

### Quantitative analysis questions about research article.

Answer the following questions for the attached research article (Dormire, S.L. & Reame, N.K. 2003. Menopausal hot flash frequency changes in response to experimental manipulation of blood glucose. Nursing Research 52(5): 338-343.): 1. Problem What is the problem the study was conducted to resolve? Why is the problem an i

### Managerial Decision Making - Statistics Problem

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 of last year. Electricity Cost Frequency \$80 up to \$100 3 100 up to 120 8 120 up to 140 12 140 up to 160 16 160 up to 180 7 180 up to 200 4 Total 50 a. Esti

### Expected Return and standard deviation of Securities/ Portfoli

Miss Maple is considering two securities, A and B, with the relevant information given below: State of Economy Probability Return on Security A Return on Security B Bear 0.4 3.0 % 6.5% Bull 0.6 15

### Probability Distributions - Scores

See the attached file. 1. The scores for an IQ test are normally distributed with a mean of 100 and a standard deviation of 15. If a person is selected at random, what is the probability that his IQ score will fall below 105 and will it be between 90 and 110. 2. An advertising company plans to market a product for low income

### Construct the 90 percent confidence interval

A. Construct the 90 percent confidence interval for occupational prestige for respondents with only a high school diploma (N = 1,412). b. Construct the 90 percent confidence interval for occupational prestige for respondents with a bachelor's degree (N = 437). State in words the meaning of the result. c. Use these statistics

### Statistical Calculations of Standard Deviation, Mean and Variance

16. The heights (in inches) of 10 adult males are listed below. Find the population standard deviation (o). 70 72 71 70 69 73 69 68 70 71 a. 70 b. 3 c. 2.38 d. 1.42 17. The heights (in inches) of 10 adult males are listed below. Find the population variance (o2). 70 72 71 70 69 73 69 68 70 71 a. 2.35 b. 2.75

### Descriptive Statistics

Use the given data to find each of the listed values 56 69 64 68 79 56 73 53 62 (a) Mean (b) Median (c) Mode (d) Midrange (e) P 80 (f) Standard Deviation (g) Variance Which is better: A score of 73 on a test with a mean of 75 and a standard deviation of 5 OR a score of 80 on a test

### Application of Statistics in Riverside Chamber of Commerce

1. Case Analysis: Riverside Chamber of Commerce Introduction All case studies address the following points: a. define the problem statement b. define any and all assumptions made to address the case study c. analyze the data utilizing concepts and knowledge relevant to this course d. describe the specif

### Calculate the mean and the standard deviation for this binomial distribution

10 undergraduate Statistics Students are enrolled in class. If its known that the probability of passing his course (with a B or above) is 70%; calculate the mean and the standard deviation for this binomial distribution. See attached file for full problem description.

### Quantitative methods interest in linear programming practice problems

Consider the following integer linear programming problem. Max Z = 3x1 + 2x2 Subject to: 3x1 + 5x2 <= 30 4x1 + 2x2 <= 28 x1 <= 8 x1, x2 >= 0 and integer The solution to the linear programming relaxation is: x1 = 5.714, x2= 2.571. What is the optimal solution to the integer linear programming problem? State the v

### Statistics Questions

1. Explain the general purpose for measuring central tendency? 2. Explain what is meant by each of the following statements: a. The mean is the balance point of the distribution. b. The median is the midpoint of the distribution. 3. Identify the circumstances in which the median rather than the mean is the preferred mea

### Measure of central tendency

Provide a brief description of a real-world example in which one measure of central tendency provides useful information while another measure of central tendency provides meaningless (or even misleading) information.

### Statistical Quality Control

Statistical Quality Control. See attached file for full problem description. (1) Twenty five items were selected at random a production process and their quality characteristic was measured resulting in the following data: i x i x 1 97.00 16 78.82 2 87.22 17 94.32 3 102.44 18 95.96 4 112.76 19 101.35 5 111.98 20

### Answer to Statistics question: Quantitative Methods

Joe is going to invest \$250,000 in the development of new products. The new products have the following expected costs, yields, and degrees of risk. Expected Expected Expected Product Cost Yield Risk A \$100,000 0.20 8 B \$50,000 0.10 4 C \$50,000 0.15 10 D \$150,000 0.10 0