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Quantative Analysis of Data

Histograms and Central Tendency

Compute descriptive statistics for the number of brothers and sisters (variable sibs), years of education (variable educ), and hours worked last week (variable hrs1). Obtain histograms for the variables as well. For each variable, compare the values of the different measures of central tendency (Mean, Median, Mode). Indi

Accounting Business: Minnetonka Case Study

The Minnetonka Corporation, which produces and sells to wholesalers a highly successful line of water skis, has decided to diversify to stabilize sales throughout the year. The company is considering the production of cross-country skis. After considerable research, a cross-country ski line has been developed. Because of the co

Descriptive Statistics

Calculate the Mean, Median, First Quartile, Second Quartile, Variance, Standard Deviation, Range, Inter Quartile Range and Z-Score from the given data.

Simple Statistics Problems (Entry Level)

Attached are my statistics 101 problems that are to be completed and DONE (see attachment). By completing these problems you will be providing me with a valuable study guide to use so I will be able to solve problems such as these in the future. PLEASE make sure to DO ALL OF THE PROBLEMS. Do not make the EXPLANATIONS complic

Funamentals of Statistics IP 3 pgs

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

Mean, Median and Mode

The responses of a sample of 1020 people who were asked if the air quality in their community is better or worse than it was 10 years aga are shown below. Find the mean, median and mode of the date. Better: 345 Worse: 430 Same: 245 a) Find the mean. Select correct choice below. Fill in answer to comple

Mean of Total Fat in Fast Food Chain Sandwiches

3.11- The following data contains the total fat , in grams per serving, for a sample of 20 chicken sandwiches from fast food chains. Sandwich Calories Fat Sat Fat Carbs Sodium Wendy's Ultimate Chicken Grill 360 7 2 44 1100 Baja Fresh Original Baja Taco with Charbroiled Chicken 370 8 1 53 680 Burger King Smoky BBQ Fire Gr

Measures of Central Tendency and Z Score

A: To revise an existing inventory system, a company needs to know something about the lead time for orders it places for a critical part. The company looks at the last 20 orders placed and finds that the lead time in days are: 1,4,6,7,4,5,6,8,4,5,7,8,4,6,7,10,4,6,7,11. a-What is the mean lead time for an order? b-What i

how to calculate mean and standard deviation

Given the holding-period returns shown here, compute the average returns and the standard deviation for Supply Chain Inc. and Wholesale Importers, Inc. Month Supply Chain Inc. Wholesale Importers 1 6% 4% 2 3 2 3


Please show all work. 1. There are 10 rolls of film in a box and 3 are defective. Two rolls are to be selected, one after the other (without replacement). What is the probability that neither roll will be defective? 2. The Ace Battery Company manufactures automobile batteries. The company has determined that the lives

Statistical Quality Control- Mean and Range Chart

1. Statistical Quality Control- Mean and Range Chart 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 out

Generating Simple Random Samples

A company's QC dept. has recorded the proportion of defective items for each of 500 monthly shipments of one of the computer components that the company produces (data in attached file).The QC dept. manager does not have time to review all of this data. Instead she would like to examine the proportions of defective items for a

Quantitative Methods and Software

Simulation have a lot of applications in different industries. Do a search on the internet and find one application software and talk about it.

Variance on Miles per Gallon

Students in a high school class have collected data on the gas mileage of their parents cars. The data are summarized in the table below. Gas Mileage (based on miles per gallon) Mean - 22.7 Median - 24 Variance - 16.8 The students would like to convert the results to kilometers per liter to compare the results with a

Decision anaylsis using maximax,maximin, Hurwicz and equal likelihood

1. The owner of the Burger Doodle Restaurant is considering two ways to expand operations: open a drive up window or serve breakfast. The increase in profits resulting from these proposed expansions depends on whether a competitor opens a franchise down the street. The possible profits from each expansion in operations, given bo

Scale of Measurement - NOIR

For each of the following, identify the scale of measurement (NOIR) and the best measure of central tendency for the data. A survey reports that chocolate is the most popular ice cream flavor, followed by vanilla, strawberry, and chocolate chip. What scale of measurement is being used? Should the researcher report this inform

Skewed Distributions Evidence

For the following data set, indicate whether the shape of the distribution is normal, positively skewed, or negatively skewed. Provide evidence for your answer by calculating the mean, mode, and median. Hours spent watching TV in a week for a sample of children ages 1 to 6 (n=12) 5, 8, 4, 2, 15, 14, 10, 0, 5, 18, 4, 5

Variance and Standard Deviation of Weights

Collect data consisting of at least 20 values. (You may also create a data set with reasonable values for your variable). The values are given represent the weights of the 20 kids in the first grade class room: 36, 36, 37, 37, 38, 38, 41, 41, 41, 42, 42, 42, 42, 43, 44, 44, 44, 45, 45, 45, a.Define the variable - the weight

Quantitative Methods: Finding Grade Point Average

The grade point average of students at a university is normally distributed, with a mean of 2.6 and a standard deviation of 0.6. A recruiter for a company is interviewing students for summer employment. What percentage of the students will have a grade point average of 3.5 or greater?

Quantitative Methods

Molly Dymond and Kathleen Taylor are considering the possibility of teaching swimming to kids during the summer. A local swim club opens its pool at noon each day, so it is available to rent during the morning. The cost of renting the pool during the 10-week period for which Molly and Kathleen would need it is $ 1,700. The po

Quantitative Methods

Kim Davis has decided to purchase a cellular phone, but she is unsure about which rate plan to select. The "regular" plan charges a fixed fee of $55 per month for 1,000 minutes of airtime plus $0.33 per minute for any time over 1,000 minutes. The "executive" plan charges a fixed fee of $100 per month for 1, 200 minutes of airt

Math questions

Assignment : Baseball 2005... Northewest Airlines.. Grocery Stores... Health Costs ... Major League ... Income Spent on Housing... I edited the remaining questions (Please see the attached file)

Degree of Confidence

A simple random sample of students is selected, and the students are asked how much time they spent preparing for a test. The times in hrs. are as follows: 1.3 7.2 4.2 12.5 6.6 2.5 5.5 Based on these results, a confidence interval for the population mean is found to be u = 5.7 Plus or minus 4.4. Find the degree of confid

Hypothesis Testing Using One Variable's Data

Task: 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 appropriate critical value, selecting the test statistic and determining its value from the sa

Risk and Return: Expected, Deviation, Probabilities

7.3 Expected returns: You have chosen biology as your college major because you would like to be a medical doctor. However, you find that the probability of being accepted into medical school is about 10 percent. If you are accepted into medical school, then your starting salary when you graduate will be $300,000 per year.

Nielsen Media Research

Nielsen Media Research has been rating television programs for nearly 50 years. Nielsen uses several sampling procedures, but its main one is to track the viewing pattern of 5000 households. These contain over 13,000 people and are chosen from a cross section of the overall population. The households represent various locations,

Standard Deviation & Expected Rate of Return: Kurt's Adventures

Kurt's Adventures, Inc. stock is quite cyclical. In a boom economy, the stock is expected to return 30% in comparison to 12% in a normal economy and a negative 20% in a recessionary period. The probability of a recession is 15%. There is a 30% chance of a boom economy. The remainder of the time, the economy will be at normal lev