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Statistical Figures

Promoting from Within versus Hiring from Outside: Analyzing a Graph.

It is claimed that its better to hire a manager from outside a firm than promote one from within. A human resources analyst at a firm justifies this claim by showing that average performance evaluations tend to be significantly higher for managers hired from outside the firm compared with those promoted from within. Look a

Types of Graphs In Math Education

An important idea in data interpretation is choosing which graph to use under which circumstances. Describe the benefits of different graphs for different sets of data: 1) Pictographs 2) Line graphs 3) Circle or pie graphs 4) Histograms and line plots 5) Stem-and-leaf plots

2-1 business statistics

Construct a column chart for the data in the excel file state unemployment rates to allow a comparison of the June rate with historical highs and lows. Would any other charts be better to visually covey this information? Why or why not? State Unemployment Rates State June 2008 Rate Historical High Historical Low

Graphs, Bars, and Histogram Questions

1. In constructing a histogram for given data set (let say age data of your community people), how many class intervals will you consider in the graph. Would you tell us the rules to determine the number of class intervals in constructing a frequency table of a continuous outcome measure data? 2. Would you please tell us with a

Manufacturer of exercise bicycles: Months owned vs hours used last week

A manufacturere of exercise bicycles is studying the relationship between the number of months an exercise bicycle has been owned and the length of time it was used last week. Data for a random sample of 7 owners are proviced in the table below. Months owned (x) Hours used last week 14

Various Statistical Problems

See the attached file. Problem 2.5 The following information is collected from students upon exiting the campus bookstore during the first week of classes: a. Amount of time spent shopping in the bookstore b. Number of textbooks purchased c. Academic major d. Gender Classify each of these variables as categorical o

Chart the decay rate of tennis players in a tournament

See attached file for data. Part 1. Each year the local country club sponsors a tennis tournament. Play starts with 128 participants. During each round, half of the players are eliminated. How many players remain after 5 rounds? Chart the decay rate. Part 2. Given the following data: [img src="@17728859"] - Please vie

Bar Charts and Confidence Interval

The following data were collected on the examination results of biology students in 4 second level biology modules: There were 20 - 30 students in each class: 1. Vertebrate Physiology & Evolution: 56, 57, 67, 75, 45, 35, 56, 67, 82, 91, 58, 60, 61, 63, 76, 54, 36, 45, 67, 57, 60, 63, 76, 78, 50, 60, 54. 2. Practical Ski

Scatter Plots

Sketch a scatter plot that could represent data from each of the following. Label the axes to indicate the independent and dependent variable. 1. People's ages (starting at 20) and their reaction times 2. Oven temperature and the cooking time for a turkey 3. Exposure to sunlight and the risk of heart attacks

Statistics: Using the Data Analysis Toolpac in Excel

See the attached file. I need some help getting started with this assignment. I don't want the assignment done for me. I just have no idea where to start. I have limited experience with Excel. The actual assignment is attached and it includes the instructions. I would appreciate it if someone was able to direct me on the

Understanding Graphs

Please help with the following discussion in at least 400 words. How can different graphs about the same data be used to encourage children's progression in understanding graphs?

Statistics in the Health Care Field

Please see the attached file. Identify the type of chart or graph and what this type of chart or graph is usually used to depict. Was the proper graph or chart used to represent this data? Why or why not? Was this the best way to display the data? What other types of graphs could have been used? Is the scope and scale of the

Regression Analysis: AIU benefits data. Construct charts and diagrams

See attached files. Prepare a report using Excel as your processing tool to process three simple regression analyses. First run a regression analysis using the BENEFITS column of all data points in the AIU data set as the independent variable and the INTRINSIC job satisfaction column of all data points in the AIU data set

Performance: Control Chart for Process Mean

13-14 Boston-based Legal Seafoods prides itself on having instituted an advanced quality control system that includes the control of both food quality and service quality. The following are successive service times at one of the chain's restaurants on a Saturday night in May 2007 (time is stated in minutes from customer entry t

Supply and Demand for Wheat

Suppose the total demand for wheat and the total supply of wheat per month in the Kansas City grain market are as follows: Thousands of Bushels Price per Bushel Thousands of bushels Surplus(+) or shortage(-) 85 $3.40 72 ____ 80

Statistics: Plotting Charts in Excel, Scatterplots

Topic 2, Problem 5 - The following table gives information from a sample of college students: gender, number of children in family of origin, and number of children in their ideal family, in which they may someday be a parent. Gender Origin Ideal F 2 2 M 3 2 M 4 3 F 2 2 F 4 3 M 5 5 F 3 3 F 2 3 F 2 2 F 4 4 M 3 3 F

Confidence Interval for Mean & Line chart

Find a confidence interval for µ assuming that each sample is from a normal population. a. x-bar = 24, s = 3, n = 7, 90 percent confidence b. x-bar = 42, s = 6, n = 18, 99 percent confidence c. x-bar = 119, s = 14, n = 28, 95 percent confidence A random sample of 16 pharmacy customers showed the waiting times below

Descriptive Statistics Problems using SPSS

Unit 1 Homework: Summarizing and Describing Data This homework requires both SPSS and your calculator. There are very specific and helpful guidelines for doing this type of homework located in the Graphing Tutorial in Unit 1. Submit only one file for the entire homework into the gradebook. Either create text boxes in SPSS an

Statistical Process Control: Compute upper and lower control chart limits

See attached file. Factors for computing control chart limits (3 sigma) for this problem Cordelia Barrera is attempting to monitor a filling process that has an overall average of 715 cm3 The average range R is 6 cm3 For a sample size of 10 the control limits for 3-sigma x-bar chart are: Upper Control Limit (UCL x-bar

Pelican Stores Case

Pelican Stores, a chain of women's apparel stores operating throughout the country, recently ran a promotion in which discount coupons were sent to customers of related stores. Data collected for a sample of 100 in-store credit card transactions during one day in November 2002 are contained in the file named Pelican. Table 3.14