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# Descriptive Statistics

### Question about Descriptive Statistics and Graphs

1. A survey on 25 people on how they got news resulted in the following data. M M N M R N N R T T R N T M R R M T N M R N R N T a) Construct a frequency distribution for the data (N = newspaper, T = television, R = radio, M = Magazine) b) Construct a pie graph for the data and analyze the results. 2. Below are

### Calculation of Descriptive Statistics

Would like to be shown how the attached questions are solved. I prefer workings and explanations as that is a better way of learning and understanding how the problems are solved.

### Linear Programming and Sensitivity Analysis Using Solver

Sky Queen (SQ) has hired you to develop its production plan for the next 12 months (September - August.) The objective is to minimize total cost. SQ can hire and fire employees but this action incurs a hiring cost of \$600 per employee and a firing cost of \$950 per employee. Other relevant costs are: \$8.00 per unit produced in

### Highest level of Measurement

A book inventory record contains the following information: a. title: More Mysteries b. Author: Roger Morimer c. Date of pub: 1998 d. List price: 25.00 e. Number in stock: 6 For the information a to e. List the highest level of measurement as ratio, interval, ordinal, or nominal

### Expectation of life, variance, median, and mode of distribution problem

If the random variable T has p.d.f. given by f_T(f) = ce^-ct for t >= 0, c > 0, calculate: the complete expectation for life E[T], var(T), median(T), and the mode of the distribution of T.

### Four multi-part questions

Please see Excel file. a. Compute the mean and standard deviation for the sample data b. Using the mean and standard deviation computed in part 9a) as estimates of the mean and standard deviation of salary for the population of benefits managers with an annual salary between \$55,000 and \$71,000 c. Develop a histogram f

### Clearly define the dependent and independent variables of the shortage of teachers in the United States. The dependent variable is the variable whose value is the result or is a function of the control or independent variables

With more then a million teachers set to retire we are seeing a record number of turnovers in the teaching profession. In a time where student enrollments across America are increasing at a rapid place experts predict that we will need more then two million teachers over the next decade. Clearly define the dependent and indepen

### Break even volume as a percentage of capacity

The Rolling Creek Textile Mill produces denim. The fixed monthly cost is \$21,000, and the variable cost per yard of denim is \$0.45. The mill sells a yard of denim for \$1.30. If the maximum operating capacity of the Rolling Creek Textile Mill described in problem 3 is 25,000 yards of denim per month, determine the break even volu

### Subject: Quantitative Analysis

A quality characteristic of interest for a tea-bag-filling process is the weight of the tea in the individual bags. If the bags are underfilled, two problems arise. First, customers may not be able to brew the tea to be as strong as they wish. Second, the company may be in violation of the truth-in-labeling laws. In this exa

### Analyze job satisfaction among men and women

The data set for our course is available via the following links: DataSet and DataSet Key contain the following eight sections of data that will be used throughout our course: (1) Gender (2) Age (3) Department (4) Position (5) Tenure (6) Overall Job Satisfaction (7) Intrinsic Job Satisfaction - Satisfaction with the actual pe

### Calculate the variation ratio for each type of adult offender group.

To examine the continuity and discontinuity in the criminal careers of 7,453 females of low socio-economic status, Tracy and Kempf-Leonard (1996) examined whether these females were nonoffenders, one-time offenders, recidivist offenders, or chronic offenders as juveniles and whether these females became nonoffenders, one-time of

### Descriptive statistics for cross-sectional data: term project

Deliverable 1: Descriptive Statistics (10 points) Our main emphasis in the course is "inferential" statistics which means taking samples and drawing an inference or conclusions about the population. Access raw data or a database from government, business, health, and similar official Web sites pertaining to your area of i

### Calculations for sample size

How many quarters must we randomly select and weigh if we want to be 99% confident that the sample mean is within 0.025 g of the true population mean for all quarters? Based on results from a sample of quarters, we can estimate the population standard deviation as 0.068 g.

### Descriptive Data Analysis

Describe descriptive data analysis?

Imagine a team of researchers was going to study "you." They would be gathering data from a typical day at your job, your home life, and school. When the data compilation is finished the researchers would conduct an analysis. What would a distribution or a bell curve look like from your day? Give examples of how data from aspect

### Density function of a continuous random variable

A continuous random variable X has the following density function: f(x) = x, 0<=x<=1, = (2-x), 1<x<=2. f(x) = x, 0 less than and equal to "x" less than and equal to 1, = (2-x), 1 less than x less than or equal to 2. Full equation on top does not read out on this web site?? See written out problem for clarification. Not

### Descriptive Statistics

Collect at least 30 pieces of numerical (quantitative) metric data (see p.16-18) but no more than an n of 50 (30-50 observations and only one theme). If you have a sample larger than 50 randomly select a subset so your n (sample size) is no more than 50. From the data, plot a histogram, a stem-and-leaf diagram and an ogive

### Hypothesis testing for US unemployment statistics

Each month the U. S. Bureau of Labor Statistics publishes a variety of unemployment statistics, including the number of individual s who are unemployed and the mean length of time the individuals have been unemployed. For November 1998, the bureau of Labor Statistics reported that the national mean length of time unemployment w

### PERT/Critical Path

Activity Immediate predecessor Time (Days) A - 3 B - 7 C

### Assignable variation and chance variation

Describe the difference between assignable variation and chance variation.

### A CPM Problem Project Completion

Develop a network for this data, total project completion time and the critical path: Activity immediate Predecessor Time(days) A - 2 B

### Bank Operations Case Study

The workload in many areas of bank operations has the characteristics of a non-uniform distribution with respect to time of day. For example, at Chase Manhattan Bank in New York, the number of domestic money transfer requests received from customer, if plotted against time of day, would appear to have the shape of an inverted U

### New York State Security

What is New York city homeland doing to keep the state secured? What action are they taking to keep the state secure from terrorism?

### Frequency Distribution

1. The distribution of the grades of the 1st Assignment in the class of Statistics is shown below: [The calculations and the graph for this exercise must be done on Excel. As soon as you get the data on class intervals and frequencies that are shown below, you will create a table on Excel with the necessary detailed column c

### Indicate and defend which measures of central tendency and variability you think is most appropriate

#1- Indicate and defend which measures of central tendency and variability you think is most appropriate for these data: 3,5,3,2,8,4,6,7,1,4,3,2 #2- Calculate the semi-interquartile range for these data and indicate which measure of central tendency and variability would provide the best description of these data: 24,16

### Associations among Variables

Can you explain this to me and give me an example of associations among variables?

### Describing Statistical Statements

Please complete the following: A. Identify the population and the sample: A survey of 787 small-business managers found that 72% are optimistic about the future of their company. b. Determine whether the numerical value describes a parameter or a statistic: 19% of a sample of Indiana 9th graders surveyed smoked cigarettes

### Moving Data From PDF to SPSS

I have to make value labels of a data set that is from a PDF file. I have to do this in SPSS, except I have no clue how to import the data into SPSS from a PDF file. I tried copy and pasting, but I can't just highlight and copy one column at a time. It makes me highlight the entire document. There's gotta be some easier way

### Sample size

A random sample of 41 basketball players from The Official NBA Basketball Encyclopedia gave the sample standard deviation for player height as s=3.32 inches. How many more players from this encyclopedia should be included in the sample to be 99% sure that the sample mean is within 0.50 inches of the population mean of all player

### Rolling Sevens and other questions

What is the probability to roll 2 sevens with 2 dice on two consecutive rolls? Note: to roll a 7, you need 2 dice and will roll 2 dice 2 times to get 2 sevens. _________________________________________________________________________________________________________________ Going fishing in a lake with bass weighing an avera