Statistic

Making Cents of Statistics: Flipping a Coin to Analyze the Law of Large Numbers in a Classroom Setting Introduction Flipping a coin is a simple action most people have seen or done. But what results would one yield if they flipped a coin one hundred time. The Law of Large Numbers addresses the results that are almost certain. The Law of Large Numbers is “A law expressing the fact that if a trial in which all outcomes are independent of each other and equally likely is repeated, then the…

To assess the overall model fit of the measurement model, confirmatory factor analysis (CFA) was performed. The measurement properties resulted from CFA are summarized in Table 3. In this study, the chi-square statistic indicated the overall model was not fit very well (x^2 = 527.397, p < .001). However, The value of the normed chi-square static to sample size, showed that the model fit the data well with x^2/df at 2.028, which was lower than the recommended threshold of 3. In addition, the…

illustrated in the textbook uses two different variables utilizing the cross-tabulation method with percentages (Cooper & Schindler, 2014, pp. 419-420). When cross-tabulation is implemented in research methods, data can be gleaned from a multitude of statistics in an easy to read and interpret form for managers and analysts to make business decisions (Yin, Hirokawa, Yau, Hashimoto, Tabata, & Nakatoh, 2013, p. 31). With equal numbers of surveys sent out to both working/middle class and appeal…

A Look at 4 Medical Malpractice Statistics Medical errors claim nearly 10 percent of the population, a revelation that, in part, led to current health care reforms. [1] Care providers can prevent many of these deaths with better coordination and improved organizational performance. To date, improving safety has proved difficult for health care organizations due to a discipline wide lack of direction in research medical errors. Medical Errors That Cause Mortalities in the United States In the…

Answer the following question: Define the term statistical hypothesis. A hypothesis that is testable on the basis of a process being observed through a set of random variables. Define the terms null hypothesis and alternative hypothesis. The term null hypothesis refers to a general statement or a default position in which there is no relationship between two measured phenomena or no difference among groups.In other words, it is a simple hypothesis that is related to a contradiction to a theory…

There is little doubt public education in the United States is under intense scrutiny from the American public in recent years. In Mississippi, years of negative student outcomes have created a great deal of negative publicity for the state’s public schools. It is important for educators, whether at the district level, research level, or policymaking level, to continue to study available data to identify areas of weakness with the realm of education and work collaboratively to remedy those…

The VCE mathematics topic that I have chosen is Probability, in Mathematical Methods Unit 1 Area Study 4: Probability and Statistics (VCAA, 2015). The first section presents a literature review of student learning probability. It also addresses the common pitfalls that may impede their learning. The second section outlines a unit plan for teaching probability based on the new VCE study design. Sample activities worksheets and assessment tasks are included in the appendices. Literature Review:…

Econ471 Final Project Usage Forecast of a city’sbikeshare system in Washington,D.C Courtesy of Capital Bikeshare Group 4 Xinchen PanDifei Luo Yimeng WuPak Ng YuxiGuo University of Illinois at Urbana-Champaign Dec.02, 2014 Table of Contents Introduction………………………………………………………. 3 Data analysis……………………………………………………... 4 Making a model/assumption checks……………………………... 8 Conclusion……………………………………………………… 19 Appendix………………………………………………………... 21 References………………………………………………………. 23…

2.4. Data Analysis For the analysis of the quantitative data, one-way ANOVA, Chi-Square test of independence and descriptive statistics were applied. For ANOVA, in order to determine which groups caused the significant difference, Tamhane T2 test, one of the most common post hoc (multiple comparison) tests, was used. For the normal distribution of data, the skewness and kurtosis coefficients were examined. For the normality test skewness coefficient of a distribution taken in the range of -1.5…

in four classes at a fitness club. Steinberg et al. state, “217 persons were tested during the six or seven sessions” (p. 273). Use of the word “or” makes us wonder if Steinberg et al. knew how the sampling took place. They go on to state that statistics used to prove the hypothesis were taken from those participants who attended five or more classes. Comparing this sample to the population as a whole, is inappropriate since those who felt negative moods after exercise were not likely to attend…