Point estimate

Bài giảng "Các phương pháp định lượng 1 (Học phần: Xác xuất thống kê) - Thống kê suy luận" trình bày các nội dung chính sau đây: mô hình thống kê (statistical model); ước lượng điểm (point estimation) và phân phối mẫu (sampling distribution); tính chất cần thiết của ước lượng điểm; định lý giới hạn trung tâm (the central limit theorem);... Mời các bạn cùng tham khảo nội dung chi tiết!

27p kimphuong1144 04-12-2023 10 4   Download

This thesis aims to build on the current body of knowledge relating to the tertiary radiation contributions within an interventional radiology suite. An accurate estimation of tertiary radiation requires knowledge of the amount of patient-scattered radiation incident onto the concrete ceiling (the patient-scattered air kerma) and the fraction of the radiation incident on concrete that is scattered back towards the point of interest (the concrete-scattered air kerma).

125p runthenight04 02-02-2023 10 2   Download

Doctoral dissertation present the content: point cloud representation and the proposed method for table plane detection; primitive shapes estimation by a new robust estimator using geometrical constraints; detection and estimation of a 3-D object model for a real application; conclusion and future works.

159p gaocaolon6 30-07-2020 28 3   Download

Lecture "Probability & statistics - Chapter 7: Sampling" has contents: Sampling, sampling distribution, point estimate, acceptance interval, random sample, sampling distribution, acceptance interval.

18p abcxyz123_07 19-03-2020 30 1   Download

Lecture "Probability & statistics - Chapter 8: Estimation" has contents: Concept of estimate, point estimate, maximum likelihood estimate, interval estimate, for mean, for proportion, for variance. Invite you to consult the content.

20p abcxyz123_07 19-03-2020 22 1   Download

Chapter 14 - Simple linear regression analysis. After mastering the material in this chapter, you will be able to: Explain the simple linear regression model, find the least squares point estimates of the slope and y-intercept, describe the assumptions behind simple linear regression and calculate the standard error,...

14p whocare_b 05-09-2016 52 1   Download

Chapter 15 - Multiple regression and model building. After mastering the material in this chapter, you will be able to: Explain the multiple regression model and the related least squares point estimates, explain the assumptions behind multiple regression and calculate the standard error, calculate and interpret the multiple and adjusted multiple coefficients of determination,...

15p whocare_b 05-09-2016 64 1   Download

Construction of bounds on the elastic moduli of isotropic multicomponent materials which involve three-point correlation parameters. We use numerical methods to study several representative material models. Construction of three-point correlation bounds on the effective elastic shear modulus of composite materials and applications of the bounds are given to some composites.

31p change04 08-06-2016 39 4   Download

Rủi ro là khả năng xảy ra của mất mát, hư hỏng hoặc một biến cố không kỳ vọng. • Khi phân tích rủi ro, bạn nên quan tâm đến:  Rủi ro ở đâu (chổ nào)? (Cái gì là rủi ro?)  Làm thế nào để định lượng rủi ro? • Phân loại phân tích mô phỏng bằng bảng tính:  Ước lượng điểm (Points Estimate)  Ước lượng khoảng (Range Estimate)  Các tình huống Cái gì-nếu (What-if Scenarious)  Mô phỏng Monte-Carlo (Monte-Carlo Simulation)...

14p henchidaubung 29-08-2013 143 37   Download

THE EFFECTS OF CUSTOMER LOYALITY ON PROFITABILLITY Chapter Three turns to a wholly different, but not unrelated, topic, the role of admissions exam scores in the identification of well-prepared students in the college admissions process. The case for using such exams is often made with “validity” studies, which estimate the correlation between test scores and eventual collegiate grades, both with and without controls for high school grade point average. I argue that there are two fundamental problems with these studies as they are often carried out.

164p mualan_mualan 25-02-2013 62 10   Download

The Market for Higher Education: Economic Analyses of College Choice , Returns , and State Aid Policy A thesis Present I find suggestive evidence, however, that her estimates, from a sample of public school students, are upward biased by selection into private schools. Moreover, an investigation of the sampling variability of Hoxby’s estimates leads to the conclusion that her standard errors are understated, and that even her own point estimates of the competitive effect are not significantly different from zero....

215p mualan_mualan 25-02-2013 63 9   Download

Ownership Structure and Business Model of Electronic Business-to-Business Marketplaces As in other multicommunity models, equilibrium in my model exhibits complete stratification: High-income families live in districts that are preferred to (and have higher housing prices than) those where low-income families live. That this must hold regardless of what parents value points to a fundamental identification problem in housing price-based estimates of parental valuations: 8

97p mualan_mualan 25-02-2013 63 8   Download

HUMAN CAPITAL INVESTMENT BY PRIVATE EMPLOYERS IN BLAIR COUNTY, PENNSYLVANIA, AS MEASURED A one standard deviation (0.28) increase in the choice index corresponds with a reduction in mean scores of only about four points, about one-eighth of an MSA-level standard deviation. Moreover, in some alternative specifications not reported here, the coefficient estimate is statistically insignificant, though still negative.

150p mualan_mualan 25-02-2013 46 7   Download

ESSAYS ON EDUCATION INVESTMENT, INCOME INEQUALITY, AND ECONOMIC GROWTH Recall, moreover, that this thought experiment assumes a choice coefficient at the upper limit of the confidence interval. At the point estimate, choice reduces the gradient of SAT scores with respect to student quality. The models in Table 1.4 reject a sizable—by any reasonable standard—effect of choice on the test score gradient.

132p mualan_mualan 25-02-2013 65 11   Download

Human Capital Investments and Interregional Wage Differences in a Southeast Asian Country Point estimates of the choice-peer group interaction are almost uniformly negative, suggesting that effectiveness sorting is less complete in high-choice than in low-choice markets. These estimates are imprecise, however, and most cannot reject a zero effect.

179p mualan_mualan 25-02-2013 70 8   Download

MEIJT INDUSTRIAL DEVELOPMENT: A CASE STUDY Given the lack of precision in the NELS and CCD estimates, it is somewhat surprising how well they line up with those in Table 1.4. As before, the choice effect is indistinguishable from zero, but point estimates suggest that effectiveness sorting is slightly less complete in high-choice markets. There is nothing to indicate that the SAT-based results are an aberration.

68p mualan_mualan 25-02-2013 70 6   Download

COMPETITIVE SUPPLY CHAIN AND REVENUE MANAGEMENT: FOUR ESSAYS When the peer group measure is interacted with the choice index—in Column B, and again with additional controls in the remaining columns—the coefficient is indistinguishable from zero, with a negative point estimate in every specification. Panel B repeats this analysis, this time with the score earned by students when they were in the 12th grade.51 Again, estimates of the choice effect are imprecise but are—with one statistically insignificant exception—of the opposite sign from that predicted by the economic model....

203p mualan_mualan 25-02-2013 137 21   Download

GLOBALIZATION AND ITS IMPACT ON MEDIA IN CHINA: A COMPARATIVE SEMIOTIC CONTENT ANALYSIS OF VISUAL REPRESETATION IN CHINESE AND US MAGAZINE ADVERTISEMENTS 1979-1998 To assess their validity, I estimate the basic model using test score data from the National Education Longitudinal Study (NELS) and high school completion rates from the Common Core of Data (CCD). Neither of these has nearly the breadth of the SAT data, so the estimates presented here are not as precise as those above, but the point estimates are reassuringly similar....

193p mualan_mualan 25-02-2013 68 8   Download

ALTRUISM AND THE FAMILY FIRM : SOME THEORY Columns E and F explore the impact of varying the sample definition. In Column E, the basic model is estimated on public schools only, while in Column F the 18 MSAs that have only a single district are excluded. The choice-peer group interaction coefficient is again negative in each of these specifications, significantly so (and with a substantially larger point estimate than in the basic specifications) in the latter case.

117p mualan_mualan 25-02-2013 66 8   Download

For diffeomorphisms of smooth compact finite-dimensional manifolds, we consider the problem of how fast the number of periodic points with period n grows as a function of n. In many familiar cases (e.g., Anosov systems) the growth is exponential, but arbitrarily fast growth is possible; in fact, the first author has shown that arbitrarily fast growth is topologically (Baire) generic for C 2 or smoother diffeomorphisms.

83p noel_noel 17-01-2013 43 7   Download