Explore BrainMass

Descriptive Statistics

A study was conducted comparing female adolescents who suffer from bulimia (an eating disorder) to healthy females with similar body compositions and levels of physical activity. Listed below are measures of daily caloric intake, recorded in kilocalories per kilogram body weight, for samples of adolescents from each group.

A study was conducted comparing female adolescents who suffer from bulimia (an eating disorder) to healthy females with similar body compositions and levels of physical activity. Listed below are measures of daily caloric intake, recorded in kilocalories per kilogram body weight, for samples of adolescents from each group. Da

Central Tendency

1. Compare the mean and median of the HC3 variable and the mean and median of the OUTNI variable. What does the similarity/difference between the mean and median indicate? 2. On average, do people use the nutrition information the same when buying food for home or selecting a menu item? 3. Develop a z-score for the age vari

Type of Variable: Scale and Side Effects

The severity of side effects experienced by patients while being treated with a particular medicine is under study. The severity is measured on the scale: none, mild, moderate, severe, very severe. a. Name the variable of interest. b. Identify the type of variable Is the variable of interest the scale and the variable

Expected Total Fixed Cost of Hilton Hotels

Hilton Hotels cost function based on guest-days of occupancy for custodial cost is given as: Y = $50,000 + $7.50X. Hilton Hotels expects an occupancy level of 10,000 guest days. Which are the expected total fixed cost?

what is the best point estimate

Refer to Data Set 3 in Appendix B. a. Based on the sample results, find the best point estimate of the percentage of college students who gain weight in their freshman year. WTSEP WTAPR 72 59 13 97 86 11 74 69 5 93 88 5 68 64 4 59 55 4 64 60 4 56 53 3 70 68 2 58 56 2 50 47 3 71 69 2 67 66 1 56 55 1 70 68 2 61

What will be the next year's EPS? What rate of growth is expected?

Soencer Supplies' stock is currently selling for $60 a share. The firem is expected to earn $5.40 share this year and to pay a year-end dividend of $3.60. (a) If investors require a 9% return, what rate of growth must be expected for Spencer? (b) If Spencer reinvests earnings in projects with average returns equal to the stock

Help with Supplementary Exercises

I need help (step-by-step) with the following example exercises (please see attached). These examples are used to help us prepare for the the types of problems that will be on our final. I am not good in math (especially statistics) and hope that someone can help break these answers down in laymens terms. Thanks, E

Differences in Aggressive Behavior Across Grade Levels

A researcher ws interested in the differences in aggressive behavior across grade levels. They selected two samples to compare: a group of first graders at a public school and a group of 5th graders from a private school. The researcher measured the number of times each child hit another during 30 minute playground interactions.

Decision Modeling

Develop a two way data table for the airline pricing model for airplane capacities ranging from 200 to 360 in increments of 20 and fixed costs ranging from $60,000 to $120,000 in increments of $10,000

Descriptive Statistics: Mean, Median, and Mode

The following set of numbers represent the scores of 30 psychiatric inpatients on a widely used measure of depression. What are the mean, median, and mode for these data? 41 27 32 24 21 28 22 25 35 27 31 40 23 27 29 33 42 30 26 30 27 39 26 34 28 38 29 36 24 37 If the values of the mean, median, and mode are not

Label and Identify the Variables and Type Measurements

Label and identify the variables and type measurements in the article below. While 80 percent of Americans believe it is a good time to buy a home, home owners have never been so reluctant to sell, according to a new study that found "home selling sentiment" at a record low. The report by the Mortgage Bankers Association's

Descriptive statistics in SPSS

See attached file. First, using SPSS, you must use the Analyze, Descriptive Statistics, Frequency commands to generate frequency data for all of the categorical variables and the Analyze, Descriptive Statistics, Descriptive commands to generate means and standard deviations for your continuous data. Please see Lesson 21 i

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?

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


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