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 8 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 8 2   Download

The study presents thermal structure and active-passive tectonic parts of the Eastern Mediterranean Region. Curie point depth, heat flow map, Moho depth and sediment thickness are used for interpretation. The levelled magnetic data that obtained from the World Digital Magnetic Anomaly Map (WDMAM) is used. The magnetic anomaly is divided into 39 zones for Curie point depth estimation. The Curie point depth values are calculated into Fourier domain. Then heat flow map is generated. The estimated Curie point depth values are ranging from 4.5 km to 25 km.

16p tanmocphong 29-01-2022 60 0   Download

In this paper, I mention the approximate calculation of the function value at a point, based on the first derivative at its neighborhood points. The article shows which function classes can be applied to approximate. The paper also points out the importance of approximation as an estimate of the error of that calculation.

6p tamynhan9 02-12-2020 7 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

We use a detailed growth accounting method to estimate the annual growth rate of the aggregate Vietnamese capital stock over the period 1996-2005. Our results show that the rate was likely to have been in the vicinity of 7-8 % per annum. This is approximately 2 percentage points lower than estimates appearing in some previous studies.

14p nguathienthan6 02-07-2020 15 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

A database consisting of 23 tripeptides was used to study the quantitative relationships between electric surface potential descriptors and antioxidant activity QESARs. The important structural descriptors SaaNH_acnt, SsOH_acnt, SaaN, SaaN_acnt, SsssCH, SaaaC, SsNH3p, SdO, SdO_acnt were selected for constructing the linear models QESARs with genetic algorithm. The best 4-variable linear model QESARlinear including the structural descriptors SaaN, SdO, SdO_acnt and SsOH_acnt was constructed. The quality QESARlinear was exhibited in statistical values R2 fitness of 97.

7p nguathienthan1 20-11-2019 11 2   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 51 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 63 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

In this chapter, students will be able to: Learn the financial and statistical issues in the determination of sample size, discover the methods for determining sample size, gain an appreciation of a normal distribution, understand population, sample, and sampling distribution, distinguish between point and interval estimates, recognize problems involving sampling means and proportions.

25p allbymyself_06 28-01-2016 50 2   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 141 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 61 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 62 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 66 8   Download