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# Descriptive Statistics

### 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.

### Descriptive Statistics

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 the results. The measurements

### Level of measurement and validity

What is an example of data that can be transformed from one level of measurement to another, and another example of data that cannot be transformed? And why is validity for measurement so difficult to establish?

### Descriptive Statistics Frequency Distribution and Histogram

In a study of job satisfaction, a series of tests were administered to 50 participants. The following data were obtained; higher scores represent greater dissatisfaction: Use the data of this question to calculate the following: 1. Frequency dist. 2. Relative frequency dist. 3. Cumulative frequency dist. 4. Histogram

### Analysis of Variance and SS Between

An analysis of variance produces SSwithin = 40 and SStotal = 70. In this analysis, what is the value of SSbetwen? A. 30 B. cannot be determined without additional information C. 40 D. 110

### Construct an Investment Portfolio Diagram for three stocks:

At the beginning of 2004, Ms. A purchased a number of share in various companies, as follows: Company Name Number of Shares Purchase Price per Share (cents) Equimix 500 113 Farringdon 800 83 Greenbridge 400

### Descriptive Statistics & Hypothesis Testing: Lunch Break

See attached file. The Bureau of Finance has always has always been a relaxed place to work. Employees are allowed a 60 minute lunch break and not required to punch in and out. Recently, the head of the Bureau has come to suspect employees are taking advantage by taking more than 60 minutes. He decides to check and collects t

### Descriptive Statistics for Dry Cleanings

The number of dry cleaning orders picked up at Sunny Fresh Dry Cleaners was sampled over 4 hour periods. Below is the sample: 61 58 67 52 25 64 38 49 51 61 58 61 27 61 58 34 From this data set, compute the sample mean, median, mode and midrange. Compute the 1st quartile and 3rd and

### Develop and Define a Model for the Total Amount of Money

Develop a model that will determine the total amount of money you will have in the account at: The end of first year; If you deposit \$5000 in a saving account that pays 3% annual interest. (Also, define all of the model components).

### Simplex Procedure

See the attached file. The Dreskin Development Company is building two apartment complexes. It must decide how many units to construct in each complex subject to labor and material constraints. The profit generated for each apartment in the first complex is estimated at \$900, for each apartment in the second complex, \$1,500.

### Simplex method for profits at the Roller Products Company

The Roller Products Company produces roller skates and skateboards. It has three production lines. Production line 1 makes skateboard platforms. Production line 2 makes skate assemblies. Production line 3 mounts wheels on both products. The marketing department has determined virtually unlimited demand for both products. Profit

### Statistics - Descriptive Summary measures

4.21,5.55,3.02,5.13,4.77,2.34,3.54,3.20,4.50,6.10,.38,5.12,6.46,6.19,3.79,15.08 a. What descriptive summary measures would you use to present the data. which measure is the best to use and which is the worse and why? b. What conclusion can you draw about the data.

### Slope of the Equation Line

(a) Make a scatter plot of the data. What does it suggest about the correlation between X and Y? (b) Use Excel, MegaStat, or MINITAB to calculate the correlation coefficient. Also calculate the slope of the equation line. 12.4 Moviegoer Spending (\$) on Snacks Movies Age (X) Spent (Y) 30 2.85 50 6.50 34 1.50 12

### Build a transportation model in Excel and use Excel's Solver to determine the optimal daily flight schedule that will minimize total transport time.

Transportation Model. The following table shows the number of planeloads of supplies available each day from each of six supply depots and the number of daily loads demanded at each of five stores. (Each planeload is approximately equal in tonnage.) Also included in the table are the transport hours per plane (where transport ho

### Solving Descriptive and Inferential Statistics

1. Suppose we collected data from each person in the class on the number of years since their last math class and their anticipated grade for this statistics class. Determine whether descriptive or inferential statistics would be used to answer each of these research questions: a. What is the average number of years since th

### Inferential Statistics

. Individual Assignment: Inferential Statistics · Access the University of Phoenix Material, "Data for Inferential Practice Problems." Continue using the information from Inferential Practice Problems Part I and determine the following using the Excel® Analysis ToolPak? when necessary: · Calculate all

### Plot the Data on U.S. General Aviation

Plot the data on U.S. general aviation shipments (b) Describe the patterns and discuss possible causes.(c) Would a fitted trend be helpful? Explain. (d) Make a similar graph for 1992-2003 only. Would a fitted trend be helpful in making a prediction for 2004? (e) Fit a trend model of your choice to the 1992-2--3 data (f) make a f

### Must using Excel Solver and Scenario Manager

It is the new season of the "Masterchef Australia" 2 TV programme. In the grand opening of the first episode, audiences are presented with a one-time-in-history-only re-match cooking bout between Julie (last season's winner) and Poh (the runner up). This time however, both contestants cook for a buffet (i.e. cook in bulk) as

### Statistics

# 16 A random sample of the number of farms (in thousands) in various states follows. Estimate the mean of farms per state with 90% confidence. 47 95 54 33 64 4 8 57 9 80 8 90 3 49 4 44 79 80 48 16 68 7 15 21 52 6 78 109 40 50 29 Answer - #24 A pizza shop o

### Statistics: Practice Problems For an Excel Chart a. Determine the types of measurement scales for each variable (Nominal, Ordinal, Interval, Ratio) ... b. Determine the number of boys and girls in the class and create a bar graph or pie chart to display the information. c. Determine the correlations between pairs of all interval variables (i.e., Absences with PE, PE with math, math with writing, etc.) d. How much of the math grade can be explained by the PE grade? How much of the writing grade can be explained by the reading grade?

Practice Problems For an Excel Chart a. Determine the types of measurement scales for each variable (Nominal, Ordinal, Interval, Ratio): 1) Name 2) Gender 3) Absences 4) Physical Education (PE) 5) Math 6) Writing 7) Reading b. Determine the number of boys and girls in the class and create a bar graph or pie chart to d

### What are the pros and cons of selecting an established theoretical/conceptual model?

What are the pros and cons of selecting an established theoretical or conceptual model or framework? What are the pros and cons of creating/developing your own?

### Statistic 1. For each case below, choose the most appropriate statistical procedure... 2. Identify the scale of measurement in each of the following ... 3. For the following set of scores, prepare a frequency distribution, a histogram, and a stem-and-leaf display ... (File attached)

1. For each case below, choose the most appropriate statistical procedure: a. A teacher of a low-level reading group is interested in what the average score is for the group of 25 students. b. An administrator wants to find out if there is a relationship between teacher absences and student achievement. c. A math teacher want

### Qualitative/Quantitative Data

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: 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) Po

### Number of Units Required

Fixed costs per day are \$20, the variable costs \$0.16. Selling price \$1.50. Generate a net income of \$100 or greater? Using the formula where NI = net income, U = units sold, P = price per unit, VCu = variable costs per unit, and FC = fixed costs.

### Literature Review and Plagiarism

What are common practices in writing literature reviews to avoid because they are forms of plagiarism? What should be done instead? How would you organize your literature before writing a lit review?

### Mean - Deviation

3-21 The following is a set of data for a population with N=10; 7 5 11 8 3 6 2 1 9 8 a. compute the population mean b. compute the population standard deviation 3-37 The following is a set of data from a sample of n=11 items X 7 5 8 3 6 10 12 4 9 15 18 Y 21 15 24 9 18 30 36 12 27 45 54 a. Compute t

### Samples and survey responses

Using AIU's large database of survey responses from the AIU data set, complete the following: Perform hypothesis testing on one variable's data. (Choose either the intrinsic or extrinsic column.) Perform a t-test by formulating a null and an alternative statement, choosing an acceptable significance value, determining the app

### What are statistics?

Please see the attached document to answer questions I am having a hard time understanding. From attachment: 1. What are major quantitative design types? Name at least three types and provide a published example of a study for each type. 2. What different types of variables are used in quantitative studies? Describe ea

### Response types to classify findings

O Collect your data. o Present your data in one of the four appropriate general response types (rating, ranking, categorization, or sorting). o Classify your findings in order of power (nominal, ordinal, interval, and ratio). Do not discuss your analysis at this time. ? Include an Excel® workbook containing your data.