Testing the Predictive Power of Dividend Yields William N. Goetzmann; Philippe Jorion The Journal of Finance‚ Vol. 48‚ No. 2. (Jun.‚ 1993)‚ pp. 663-679. Stable URL: http://links.jstor.org/sici?sici=0022-1082%28199306%2948%3A2%3C663%3ATTPPOD%3E2.0.CO%3B2-7 The Journal of Finance is currently published by American Finance Association. Your use of the JSTOR archive indicates your acceptance of JSTOR ’s Terms and Conditions of Use‚ available at http://www.jstor.org/about/terms.html. JSTOR ’s Terms
Premium Dividend yield Regression analysis Statistics
prefer to read hard copy books. Finally‚ a proper statistical hypothesis testing method can answer the research questions in the questionnaire. In the Barnes & Noble case study‚ the hypothesis test that proportion of people who prefer to read the electronic copy of books is larger than the proportion of people who prefer to read hard copy books. The hypothesis test consists of equality of proportions of two populations. The hypothesis test can assist in determining if the emergence of electronic
Premium Statistics Null hypothesis Type I and type II errors
index was undertaken in two professional testing environments‚ with results suggesting the index can only be used with great caution. A comparison is made of the features available in selected software packages‚ and recommendations made for practitioners. As the author of the Lertap item and test analysis package (Nelson‚ 2000[1])‚ I attempt to respond to modification requests from users as time allows. Early in 2005‚ the director of a large-scale testing program wrote to ask if Lertap might
Premium Statistical hypothesis testing Multiple choice Null hypothesis
BUS 105e: Statistics By Dr Tony Halim GBA: 27 February 2013 Done by: Koh En Song Andrew (Q1211397) Melissa Teo Kah Leng (E1011088) Woon Wei Jie Jared T 04 1. Over the span of 100 days‚ the total revenue for Unicafe North and Unicafe West is $21876.60 and $22042.00 respectively. The average revenue for Unicafe North is $218.77. The average revenue for Unicafe West is $220.42. The highest revenue occurred on the 88th day for both outlets. The lowest revenue occurred on 39th day for
Premium Sample size Statistical hypothesis testing Statistics
CHAPTER 12: TESTS FOR TWO OR MORE SAMPLES WITH CATEGORICAL DATA 1. When testing for independence in a contingency table with 3 rows and 4 columns‚ there are ________ degrees of freedom. a) 5 b) 6 c) 7 d) 12 ANSWER: b TYPE: MC DIFFICULTY: Easy KEYWORDS: chi-square test of independence‚ degrees of freedom 2. If we use the [pic] method of analysis to test for the differences among 4 proportions‚ the degrees of freedom are equal to:
Premium Statistics Scientific method Psychology
be used to control their manufacturing procedures. In this particular case we consider a production line designed to fill bottles of a shampoo with a mean weight of 12 ounces of shampoo per bottle. Quality Associates‚ Inc. made a quality control testing of the manufacturing machine of this client (Alibaba Machinery)‚ to determine if the process is operating properly or if‚ perhaps‚ a machine malfunction has caused the process to begin underfilling or overfilling the bottles. The client picked a sample
Premium Sampling Arithmetic mean Sample size
Samples * This test is used when only two unrelated groups are being compared and the measurements are either interval or ratio. The two groups may or may not have the same number of samples. * The t-test for two independent groups involves testing whether or not there is a significant difference between the population means of the two groups. Consider a study wherein the effectiveness of banana leaves as an organic wrapper was compared to that of aluminum foil. The number of bacterial colonies
Premium Arithmetic mean Statistics Statistical hypothesis testing
of population 2. If we are interested in testing whether the mean of population 1 is significantly smaller than the mean of population 2‚ the a. null hypothesis should state µ1 − µ2 < 0 b. null hypothesis should state µ1 − µ2 ≤ 0 c. alternative hypothesis should state µ1 − µ2 < 0 d. alternative hypothesis should state µ1 − µ2 > 0 ANSWER: c 2. A Type I error is committed when a. a true alternative hypothesis is not accepted b. a true null hypothesis is rejected c. the critical value is greater
Premium Arithmetic mean Statistical hypothesis testing Standard deviation
Study of the Organizational climate of Jharia division of TATA steel Ltd Contents 1. Introduction 2. About TATA STEEL Ltd: - My organisation 3. Methodology 3.1 rationale of study 3.2 Objective of the study 3.3 Hypothesis test 3.4 Questionnaire of the survey 3.5 Statistical analysis 3.6Limitation of the study 4. Survey data tabulation‚ Analysis and Interpretation 5. Findings 6. Conclusion 1. Introduction This Project is a part an assignment for the Organizational
Premium Organizational studies and human resource management Organization Statistical significance
Solutions to Questions on Hypothesis Testing and Regression 1. A mileage test is conducted for a new car model‚ the “Pizzazz.” Thirty (n=30) random selected Pizzazzes are driven for a month and the mileage is carefully measured in each. The mean mileage for the sample is 28.6 miles per gallon (mpg) and the sample standard deviation is 2.2 mpg. Estimate a 95% confidence interval for the mean mpg in the entire population of Pizzazzes (you might need to round your answer a little bit to agree with mine)
Premium Statistical hypothesis testing Statistical inference Null hypothesis