eliminated‚ that is‚ . This statistic ranges from -1 to +1. Absolute values above 0.2 indicate great skewness (Hildebrand‚ 1986). Skewness has also been defined with respect to the third moment about the mean: ‚ which is simply the expected value of the distribution of cubed z scores. Skewness measured in this way is sometimes referred to as “Fisher’s skewness.” When the deviations from the mean are greater in one direction than in the other direction‚ this statistic will deviate from zero in
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psychiatric unit. J.M.‚ a 23-year-old woman‚ was admitted to the psychiatric unit last night after assessment and treatment at a local hospital emergency department (ED) for “blacking out at school.” She has been given a preliminary diagnosis of anorexia nervosa. As you begin to assess her‚ you notice that she has very loose clothing‚ she is wrapped in a blanket‚ and her extremities are very thin. She tells you‚ “I don’t know why I’m here. They’re making a big deal about nothing.” She appears to
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Statistics in Business Statistics is a mathematical science pertaining to the collection‚ analysis‚ interpretation or explanation‚ and presentation of data. It also provides tools for prediction and forecasting based on data. It is applicable to a wide variety of academic disciplines‚ from the natural and social sciences to the humanities‚ government and business ("Statanalysis Consulting"‚ 2013). Statistics is used in decision making that affects our everyday lives. The study of statistics
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a random sample of 25 stations •Normal distribution –we are assuming gasoline prices are normally distributed Null hypothesis: The mean regular unleaded gas prices for your region is the same as that in the study µ 0 = 3.16 Alternate hypothesis: The mean regular unleaded gas prices for your region is greater than that in the study µ A > 3.16 Find the t-test statistic: t=(x(bar) - µ 0 )/(s/sqrt(n)) t = (3.1948 – 3.16)/(0.0889/sqrt(25)) t = 1.957255343 Find the P-value: P = 0.03102312
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1 Statistics plays a vital role in almost every facet of human life. Describe the functions of Statistics.Explain the applications of statistics. Meaning of statistics Functions of statistics Applications of statistics. Ans:Statistics plays an important role in almost every facet of human life. In business context‚ managers are required to justify decisions on the basis of data. They need statistical models to support these decisions. Statistical skills enable managers to collect‚ analyse and
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parameters from sample statistics‚ using interval estimate (90%‚ 95% and 99% levels). The project consists of three parts as listed below. You should carefully read the instructions. This project is Group based (2 – 3) and each Group will have different results based on the initial data generated. Make sure to include all your work in the final report submitted. You will submit your final work (Report and Spreadsheet on Bb Learn) PART I: Sample Generation- data presentation and data summary (25
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call eustress that come from adrenaline and your excitement. In conclusion‚ we cannot ignore the fact that stress is a cousin of our life. Regardless of the reasons we have to manage the stress. Introduction I. Attention Device-Question‚ Statistic‚ Example‚ Story II. Central Idea-This is the main idea of your speech that is integrated into your opening introduction. III. Specific Purpose-To explain (inform‚ prove‚ show) your topic with three main points that will become the body of the
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Kristina was 10 years old when she was diagnosed with anorexia nervosa‚ and despite some mild childish resistance she had recovered and thought she would never go back to her eating disorder. Little did she know that her eating disorder was biding its time in the dark corners of her own mind. Before the end of middle school she had relapsed. During her freshman year in high school‚ she was hospitalized for 7 months. Over time she began insulating herself from her family and even her closest friends
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WHAT IS STATISTICS? Statistics is the mathematical science involved in the application of quantitative principles to the collection‚ analysis‚ and presentation of numerical data. The practice of statistics utilizes data from some population in order to describe it meaningfully‚ to draw conclusions from it‚ and make informed decisions. The population may be a community‚ an organization‚ a production line‚ a service counter‚ or a phenomenon such as the weather. Statisticians determine which quantitative
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Biological explanations for anorexia nervosa Biological explanations for anorexia nervosa include neural explanations and evolutionary explanations. 1st BIOLOGICAL EXPLANATION - Neurotransmitters -Serotonin Disturbances in the levels of the neurotransmitter serotonin appear to be a characteristic of individuals with eating disorders. Kaye 2005 found a reduction in the levels of the serotonin metabolite 5-HIAA in people with eating disorders. This suggests that brain serotonin pathways are underactive
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