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# Descriptive Statistics

### Frequency Distributions and Sampling..

The data below is how many minutes that I have read each day for 15 days. Compare the data from the first 10 days to the last 5 days 20, 10, 17, 20, 60, 0, 30, 0, 0, 0, / 15, 15, 30, 25, 18 Is the larger sample changing anything? Is your mean increasing or decreasing? Do you think the current sample you have i

### Testing Investor Concern: 5% Level of Significance

Suppose that in the past years the average price per square foot for warehouses in the U.S. has been \$32.28. A real estate investor wants to determine if that figure has changed. a sample of 48 warehouses that are for sale across the U.S is taken, and the mean price per square foot is \$31.67, with a sample standard deviation of

### Data Set and Specific Number of Observations

1.) Suppose you have a data set with 100 observations. All 100 data points have values over 1,000. The mean and the median are the same. Now you change the datapoint with the lowest value from a value of 1,001 to a value of 4. Now you recalculate the mean and median. Compared to the mean, the median will now be: A) cant tell B

### Frequency Distribution and Graphs

The scores for the 2002 LPGA- Giant Eagle are shown. Score Frequency 202-204 2 205-207 7 208-210 16 211-213 26 214-216 18 217-219 4 Construct: - Histogram - Frequency polygon - Ogive for the distribution Comment on the skewness of the distribution. Determine if the data is normally distributed usi

### Statistical Analysis - Principle of Statistics

Statistics is the art and science of collecting, organizing, analyzing, and interpreting data. Please study any sample dataset from a larger population. You are expected to organize, analyze and interpret the data, and make reasonable inferences and comparisons about the population based on the sample you are studying. Attache

### Calculating Simple Descriptive Statistics

Using the set of data given, please perform the following calculations and attach your answers as a Word (Not Excel! I need to see how to calculate) Height Distribution in Mrs. Smith's 10th grade Biology Class (in inches) Males 69 72 69 67 70 71 70 Females 60 59 63 68 66 65 67 Calculate the mean fo

### Statistics for Managers

A manufacturing company produces electrical insulators. If the insulator breaks when in use, a shor circuit is likely to occur. To test the strength of the insulators, destructive testing is carried out to determine how much force is required to break the insulators. Force is measured by observing the number of pounds of forc

### level of measurement

A media consulting company installs software on the set-top boxes of 100,000 U.S. cable TV customers; every ten seconds, the software records what channel is being viewed. These cable customers have agreed to participate, providing the media company with demographic data, such as age, gender, and income. Each week, the media c

### Descriptive Statistics & Graphs

I attached two files. Excel (Graphing) The file soil.xls contains data about daily soil evaporation and a number of predictors. Use EXP (daily soil evaporation) as your dependent variable and MAXAT (maximum daily temperature) as your independent variable. a. Plot the histogram of the two variables b. Show the Box

### Frequency Distributions and Sampling

Please help solve the following problems related to frequency distributions and sampling . 1. To get the best deal on a CD player, Tom called eight appliance stores and asked the cost of a specific model. The prices he was quoted are listed below: \$ 298 \$ 125 \$ 411 \$ 157 \$ 231 \$ 213 \$ 304 \$ 272

### How to use SPSS

State the statistical assumptions of this test. Using the data set and variables you have selected, use SPSS to calculate the following: Mean Median Mode Range Minimum Maximum Standard deviation Generate syntax and output files in SPSS. You will need to copy and paste these into your Appl

### Mean - Excel problems

3.64. A manufacturing company produces steel housings for electrical equipment. The main component part of the housing is a steel trough that is made of a 14-gauge steel coil. It is produced using a 250-ton progressive punch press with a wipe-down operation and two 90-degree forms placed in the flat steel to make the trough. The

### Descriptive Statistics and Business Decisions

If you were given a large data set such as the sales over the last year of our top 1,000 customers What types of business decisions might be affected by these descriptive statistics? Will these sample statistics accurately estimate the purchasing habits of all our customers? Why or why not?

### Probability and Measures of Central Tendency

Please guide me through solving the following problems 1. In a poll, respondents were asked whether they had ever been in a car accident. 157 respondents indicated that they had been in a car accident and 117 respondents said that they had not been in a car accident. If one of these respondents is randomly selected, what i

### Introduction and Descriptive Statistics

REQUIRED COURSE MATERIALS Grove, S. (2007). Statistics for health care research: a practical workbook. (1st ed.). St. Louis, MO: Elsevier. ISBN-13: 9781416002260 (Includes only Exercises 16, 29, 31, 36, 27 and 40) (Available as eBook in Canyon Connect) Burns, N., & Grove, S. (2011). Understanding nursing research: Buildin

### Probability of certain gender, age, height in selected sample data

See attached file for full problems and data. Answer each problem below. Be sure to show all work. Give statistical evidence for your analysis and use statistical vocabulary. Problem 1: What is the probability that a person selected at random from the collected data will be male?

### Descriptive Statistics & Charts Data Set

Problem Set 1: Please view the attachment as well. The data set contains the following variables: Sales: Total sales (in \$) by each salesperson last year Department: What department (home electronics, computers, etc) the salesperson works in. Year born: The year in which the salesperson was born Training Hours: Number

### Statistics

See attached file. A recent national survey reports that the general population gives the president an average rating of µ = 62 on a scale of 1 to 100. A researcher suspects that college students are likely to be more critical of the president than people in the general population. To test these suspicions, a random sample

### Kick-Start Speech Management

The CEO of your company expresses concern to the VP of Marketing that the sample chosen for the survey in which all the transactions were taken during a single shift of one employee is an inadequate basis for making decisions about a marketing plan. The VP of Marketing wants you to discuss your view on it during a monthly mee

1. The following list is of measured lifetimes (in thousands of hours) of a sample of a certain machine component. 5.6 4.1 6.0 5.8 5.2 4.3 6.4 5.5 6.0 5.1 4.9 4.2 4.8 6.8 5.6 5.2 7.3 5.4 4.7 5.9 5.0 6.3 4.4 6.0 (i) Group the data into classes, and draw a frequency distri

### Descriptive statistics: research; confidence interval, z score

What are some examples of descriptive statistics? Why are they used in research? What is a confidence interval? What is a z score, and when is it used?

### Descriptive Statiatics & Z Score

Attached are two files (Excel and Word). Excel comes with 2 questions and, Word comes with 1 question. This week my class covered the average and the standard deviation; the normal approximation for data.

### Theory vs Creativity in Design

I have to discuss and recommend approaches to creative tension between existing management philosophies and the ability to create new business models. The following two questions must be addressed: * How do leaders integrate innovative principles while adhering to industry and market mandates? * How may an organizatio

### Exploratory Data Analysis for AJ Davis, a department store chain

See attached data file. AJ DAVIS is a department store chain, which has many credit customers and wants to find out more information about these customers. A sample of 50 credit customers is selected with data collected on the following five variables. LOCATION (Rural, Urban, Suburban), INCOME (in \$1,000's - be careful

### Problems with Descriptive Statistics

City apartment rent (\$US) Amsterdam 1,480 Athens 840 Auckland 1,330 Bangkok 550 Barcelona 1,530 Beijing 760 Berlin 920 Bogotá 990 Bratislava 890 Brussels 2,290 Bucharest 930 Budapest 1,190 Buenos Aires 500 Cairo 550 Caracas 2,080 Chicago 2,990 Copenhagen 1,820

### Descriptive Statistics in Excel for AIU

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 global undertaking. The

### Must find means, and answer all parts of the problem. Must know how to find the solutions.

The managers with whom you met for coffee have asked you to prepare a report dealing with members of Congress. They asked you to research a random sample of 30 of the 100 senators about the following data groups: â?¢ Age â?¢ Years in the Senate â?¢ Party affiliation â?¢ Which ones vote favorably on legislation affect

### Statistics

Note: If this assignment is in the library I cannot use it because a new set of data is used each session. *******I have no clue how to do this. So PLEASE show me how ! you have been selected to participate in this massive global undertaking for American Intellectual Union The study will require that you examine data,

### Strategic, Long-Term and Short-Term Objectives

What is the difference among strategic, long-term, and short-term objectives? What is the relationship between objectives and goals? What are examples of this relationship?

### Statistics: Variance, inferential statistics, Bayes Theorem, probability distributions

1. Now is there any way you personally use statistics not related to business. For example when driving somewhere do you ever estimate the time it will take (and possibly include a plus or minus value)? 2. What is the definition of the statistical term variance? 3. "Descriptive statistics is concerned with summarizing data