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# Quantative Analysis of Data

### Rounding Off, Descriptive Statistics

Rounding Off 1. State the Round-Off Rule as described in Section 3.3. You will use this rule to decide how many decimal places to round the answers in this project. If you have not noticed by now, rounding off is important; at the very least, it can make the difference between a correct and incorrect answer. 2. What is .02

### How to calculate mean, median, mode, and quartiles.

5. The Dow Jones Travel Index reported what business travelers pay to hotel rooms per night in major U.S cities (The Wall Street Journal, January 16,2004). a. What is the mean hotel room rate? b. What is the median hotel room rate? c. What is the mode? d. What is the first quartile? e. What is the third quartile? Th

### This posting provides different problems on operation management including assignment and transportation problems for hardrock concrete company, ashley's auto top carriers and State of Missouri.

10-7 What is the enumeration approach to solving assignment problems? Is it a practical way to solve a 5 row X 5 column problem? A 7X7 problem? Why? 10-13 The hardrock concrete company has plants in three locations and currently working on 3 major construction projects, each located at a different site. The shipping cost per

### Area for Ads in the Yellow Pages

A sample of 20 pages was taken without replacement of the 1591 page phone directory "American Pages Plus Yellow Pages." On each page, the mean area devoted to display ads was measured (a display ad is a large block of multicolored illustrations, maps, and text). The data (in square milimeters) is shown below 0 260

### Mean, Median, Sum of Squared Deviations, Variance, and Standard Deviation

I had to do 100 problems. These are the ones left. I have no strength or understanding of what or how to do them. Please HELP! For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations,(d) variance, and (e) standard deviation:2, 2, 0, 5, 1, 4, 1, 3, 0, 0, 1, 4, 4, 0, 1, 4, 3, 4, 2, 1, 0 For

### Estimating Population Means

A sample of 900 first-year students at a large university has a mean SAT math score of 525 with a standard deviation of 88. Estimate the mean SAT math score for the entire first-year class. Give the 95% confidence interval. How do find this answer? What formula do I use?

### Mean, Mode, Median, Variance and Standard Deviation

I need the attached discussion question answered as the solution in my textbook is too hard to understand. Please respond to the following discussion question. You are given the following data. Student Number Age Income/ thousands Hours Studying /Per Week Final Grade Gender 1 46 37 6 70 M 2 53 46 19 92 F 3 34 25 20 95

### Quantitative Analysis - Break even

Really need help with this problem. Please show me how to set it up in the correct steps. a. Ryan is planning to finance her college education by selling programs at the football games for her team. there is a fixed cost of \$400 for printing these programs, and the variable cost is \$3. there is also a \$1,000 fee that is p

### For a particular sample of 50 test scores on a psychology exam, the following results were obtained.

For a particular sample of 50 test scores on a psychology exam, the following results were obtained. Mean- 78, Midrange- 72, Third quartile-94, Mode-84, Median-80, standard deviation-11, range-52, first quartile-68 What score was earned by more students than any other score and why ? ( 84 ? because it is the score that occurs

### Describe the data scales that are best suited for presentation in a pie chart. Does all data have a mean, median, or mode?

A. Describe the data scales that are best suited for presentation in a pie chart. How effective are the pie charts that often accompany a newspaper article in explaining the statistics being used in the article? Using any data real or fictional, develop a pie chart and interpret the results. b. Does all data have a mean, med

### Random Process: The Mean and Autocorrelation

Question: Random process X(t) = A exp(-t), t > 0 where A is a random amplitude with pdf f_A(a) that is uniformly distributed over -1 to + 1. Compute the mean and autocorrelation of random process X(t). Is X(t) a WSS process?

### Uses of statistical information in Healthcare

Hello, I need help with "uses of statistical information" in healthcare. I need to figure out what data in important to a healthcare organization, description of data, data definitions and type, and discuss the advantages of accurate interpretation. Word count 400 Cite and reference data (website) Example of data: Uses of

### True / False - Variation in the population has little if any effect on the amount of sampling that will be experienced?

Can you help me with some True / False questions on statistics? I think I am reading too much into the question for True / False. *Variation in the population has little if any effect on the amount of sampling that will be experienced? *Parameters are numbers that can be used to describe characteristics of population? *

### Statistical Form Report on a Dataset

Please assist with these problems and use two separate Excel for each problem. The same attached file information is used for both problems. 1.Using the water use data set analyze the data using Excel and report in proper statistical form/jargon about the dataset. 2. Using the water use data set analyze the data using Exc

### Confidence Intervals with Tootsie Rolls

Please help me answer these two questions and show your work. thanks. 1. A random sample of 10 miniature Tootsie Rolls was taken from a bag. Each piece was weighed on a very accurate scale. The results in grams were 3.087 3.131 3.241 3.241 3.270 3.353 3.400 3.411 3.437 3.477 (a) Construct a 90 percent confidence interval f

### Mean and Median Measures of Central Tendency

Please address the following question: When is the mean the best measure of central tendency? When is the median the best measure of central tendency?

### What is the true mean weight of the miniature tootsie rolls?

A random sample of 10 miniature tootsie rolls was taken from a bag, each piece was weighed on a very accurate scale. Results: 3.087 3.131 3.241 3.241 3.270 3.353 3.400 3.411 3.437 3.477 a) Construct a 90% confidence interval for the true mean weight. b) What sample size would be necessary to esti

### Statistics students participated in an experiment to test their ability to determine when one minute (or 60 seconds) has passed.

Find the (a) mean, (b) median, (c) mode, and (d) midrange for the given sample data. Also answer the given questions. Perception of Time: Statistics students participated in an experiment to test their ability to determine when one minute (or 60 seconds) has passed. The results are given below in seconds. Identify at leas

### Quantitative Methods Expected Returns

1.A machine costs R500 000 and will depreciate to a scrap value of R15 000 in 10 years. Using reducing method of depreciation, calculate the book value of the machine at the end of the fifth year. Show your workings. 2. A machine that costs R100 000 is expected to last 5 years and then scrapped for R15 000. Its expected retur

### Quantitative Methods Problem Solving

Please help with the following problems. The following table gives the marks (out of a total of 50 ) scored by 30 candidates in an examination : 5 5 7 10 10 11 12 15 16 17 19 19 19 20 20 20 20 21 26 26 27 28 30 30 33 36 37 37 40 45 1. Using class intervals equal to 5 marks, construct a less than cumulative frequency

### Statistics Descriptive Analysis

#8. According to United Nations figures, the populations of the world's ten largest nations in 2000 (rounded to the nearest million inhabitants) were as follows: China, 1,278: India, 1014; United States, 278; Indonesia, 212; Brazil, 170; Pakistan, 156; Russia, 147; Bangladesh, 129; Japan, 127; and Nigeria, 112. Find the (a) mea

### What is the Mean, Median, Mode and Standard Deviation?

What is the Mean, Median, Mode and Standard Deviation using the following: SAMPLE DATA: 2, 5, 7, 11, 12, 16, 16 1) What is the mean of X of the data above (TO THE NEAREST 1/10)? 2) What is the median of the data above? 3) What is the mode of the data above? 4) What is the standard deviation of the data ab

### Calculation of geometric mean is discussed in the answer.

A recent article suggested that if you earn \$25,000 a year today and the inflation rate continues at 3 percent per year, you'll need to make \$33,598 in 10 years to have the same buying power. You would need to make \$44,771 if the inflation rate jumped to 6 percent. Confirm that these statements are accurate by finding the geomet

### Order and Reorder Quality

A company reserves a safety stock of 200 units of a certain item in its inventory. The annual demand for the item is 5000 units. Calculate: (show all work) 1. The re-order point if the lead time is 5 working days and the company operates for 250 working days in the year. 2. The economic order quantity if the: COST P

### Machine Operation Quantitative Analysis

The table below gives the times during working hours in a factory when a certain machine is not operating as a result of a breakdown: TIME(MINUTES) NO. OF BREAKDOWN 0 - 9 3 10 - 19 10 20 - 29

### Discounts and Carrying Costs

A distributor of metal detectors has an annual demand of two thousand units for a certain type.The cost to the distributor is \$400 per detector, carrying cost is estimated to be 20% of the unit cost and the ordering cost is \$25 per order. If the Distributor orders in quantities of 250 or more, he can get a discount of 10% on the

### Quantitative Analysis of Vending Machines

An automatic machine that fills containers appears to be performing erratically. A check of mass of the contents reveals the following: MASS (grams) NO. OF CANS 130 - 139 2 140 - 149 8 150 - 159 20 160 - 169

### Refer to the below data sets of scores, X, Y and Z, from two 5-point quizzes to answer the questions below. Find range, IQR, SIQR, variance, standard deviation.

Refer to the below data sets of scores, X, Y and Z, from two 5-point quizzes to answer the questions below. X f Y f Z f 5 4 5 1 5 0 4 3 4 2 4 0 3 0 3 4 3 1 2 1 2 1 2 4 1 1 1 1 1 1 0 1 0 1 0 4 #1. Compute the range of scores for data sets (a) X, (b) Y and (c) Z. #2. For X data set, compute the interqu

### Refer to the below data sets of scores, X, Y and Z, from two 5-point quizzes to answer the questions. Find mean, median, mode. What is a skewed distribution? What is a symmetric distribution?

Refer to the below data sets of scores, X, Y and Z, from two 5-point quizzes to answer the questions. X f Y f Z f 5 4 5 1 5 0 4 3 4 2 4 0 3 0 3 4 3 1 2 1 2 1 2 4 1 1 1 1 1 1 0 1 0 1 0 4 #1. (a-c) Compute the mean for each set of scores. #2. (a-c) Compute the median for each set of scores. #3. (a

### Real Estate data for homes sold in Denver

A) Refer to the Real Estate data, which reports information on the homes sold in Denver, Colorado, last year. a. At the .05 significance level, can we conclude that there is a difference in the mean selling price of homes with a pool and homes without a pool?