1. This is required for a valid density curve.) b. Determine the median‚ the first quartile (Q1)‚ and the third quartile (Q3). c. Relative to the median‚ where would you expect the mean of the distribution to lie? Explain briefly. The distribution is skewed left‚ so the mean will be left of the median. d. What percent of the observations lie below 0.5? Above 1.5? 2. The following are the salaries of employees in a small business: 15‚000 15‚000 17‚500 23‚500 23‚750 25‚000 26‚000
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MAT 308 Name:___________________________ Chp 1-2 Test 100 points In order to receive full credit‚ please show all work for every problem. You are welcome to use your calculator‚ book and notes‚ but please take this test on your own. 1. In your own words‚ explain what parameters and statistics are and what the difference is between them. Give an example to clarify. (10 points) 2. According to Consumer Reports‚ a random sample of 35 new cars gave an average of 21.1 mpg
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problem Develop a problem statement- What are you going to investigate (use the 6 characteristics of a good problem statement) 1. Be interested in the problem 2. Have a manageable scope 3. Be comfortable in terms of the knowledge‚ time‚ and resources needed to investigate the problem 4. Be able to collect and analyze numerical data 5. Must be a practical or theoretical reason for you to research the problem 6. It must be ethical for you to investigate the problem Step 2- State a hypothesis
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Standardized description of index numbers for application in generic index computation software modules 1 Photis Stavropoulos1‚ Georges Pongas2‚ Spyros Liapis1‚ George Petrakos1‚ Tonia Ieromnimon1 Agilis S.A. Statistics and Informatics‚ e-mail: Photis.Stavropoulos@agilis-sa.gr‚ Spyros.Liapis@agilis-sa.gr‚ George.Petrakos@agilis-sa.gr‚ Tonia.Ieromnimon@agilis-sa.gr 2 EUROSTAT‚ e-mail: Georges.Pongas@ec.europa.eu Abstract The aim of this paper is to present a scheme for the description of index numbers
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Simply use statistics as a tool. You will be given a data. (Next year you will not be given data‚ you will gather data yoruself). 1. Data: one of the variables is dependent and other dependent. Can be multiple. Then do regression analysis. ANOVA for overall significance and Regression equation. And write based on ANOVA there is a significance or not. 2. Some comments on correlation: volume vs. horse power etc. 3. Hypothesis test of one population. I assume that the mean is etc etc. Small paragraph
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Introduction This paper concentrates on identification methods and business preventive measures. Why do people fail to notice that credit fraud is a growing problem and what could continue if business and consumers stop believing the seriousness of credit card fraud? The Business community needs increased research and preventive controls that prevent credit and identity fraud. Unless changes are instituted fraud will continue to be a persistent problem. More than half of all adults
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Strategy formulation Strategic formulation is a combination of three main processes which are as follows: Performing a situation analysis‚ self-evaluation and competitor analysis: both internal and external; both micro-environmental and macro-environmental. Concurrent with this assessment‚ objectives are set. These objectives should be parallel to a time-line; some are in the short-term and others on the long-term. This involves crafting vision statements (long term view of a possible future)
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• Defining What Statistics Really Is 1.1 Nature of Statistics The term “Statistics” came from the Latin word ‘status’ which could be translated as ‘state’. The usage of this term only became popular during the 18 th century where they defined Statistics as “the science of dealing with data about the condition of a state or community”. The practice of statistics could be traced back even from the early biblical times where they gather figures related to governance of the state for they realized
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Measures of Central Tendency Objectives of the chapter • To use summary statistics to describe collections of data • The main goal is to come up with the one single number that best describes a distribution of scores. • Lets us know if the distribution of scores tends to be composed of high scores or low scores. • To use the mean‚ median and mode to describe how data bunch up. The sales of 100 fast food shop is given below: Sales No. of (in 000s) Shops 700-799 4 800-899 7 900-999 8 1000-1099 10
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1. Which of the following is FALSE about secondary data analysis? A. Locating data with specific variables of interest can be time consuming and sometimes a researcher may not make data available. B. Information about how data was collected may be insufficient to determine whether there is bias. C. It is very expensive compared to equivalent primary data collection* D. It facilitates replication 2. A researcher wants to express the middle of a distribution of numbers‚ such that half
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