Advances in Methodology and Statistics最新文献_第7页

Environmental, generation and policy determinants of feed-in tariff 上网电价的环境、发电和政策决定因素

Advances in Methodology and Statistics Pub Date : 2015-07-01 DOI: 10.51936/iyhq8456

A. Romano, G. Scandurra, Alfonso Carfora

引用次数: 0

Web mode as part of mixed-mode surveys of the general population 网络模式作为混合模式调查的一部分

Advances in Methodology and Statistics Pub Date : 2015-07-01 DOI: 10.51936/phjl9389

N. Berzelak, Vasja Vehovar, K. Manfreda

{"title":"Web mode as part of mixed-mode surveys of the general population","authors":"N. Berzelak, Vasja Vehovar, K. Manfreda","doi":"10.51936/phjl9389","DOIUrl":"https://doi.org/10.51936/phjl9389","url":null,"abstract":"Lower data collection costs make web surveys a promising alternative to conventional face-to-face and telephone surveys. A transition to the new mode has already been widely initiated in commercial research, but web surveys remains limited in academic and official research projects that typically require probability samples and high response rates. Various design approaches for coping with the problems of sampling frames, incomplete Internet use, and nonresponse in web surveys have been proposed. Mixed-mode designs and incentives are two common strategies to reach Internet non-users and increase the response rates in web surveys. However, such survey designs can substantially increase the costs, the complexity of administration and the possibility of uncontrolled measurement effects. This paper presents and demonstrates an approach to the evaluation of various survey designs with simultaneous consideration of the errors and costs. It focuses on the designs involving the web mode and discusses their potential to replace traditional modes for probability surveys of the general population. The main idea of this approach is that part of the cost savings enabled by the web mode can be allocated to incentives and complementary survey modes to compensate for the Internet non-coverage and the higher nonresponse. The described approach is demonstrated in an experimental case study that compares the performance of mixed-mode designs with the web mode and prepaid cash incentive with that of an official survey conducted using the face-to-face and telephone modes. The results show that the mixed-mode designs with the web mode and incentives can greatly increase the response rate, which even surpasses that of the conventional survey modes, but still offer substantial cost savings. However, the results also show that higher response rate does not necessary translate to higher data quality, especially when the main aim is to obtain estimates that are highly comparable with those of the reference survey.","PeriodicalId":242585,"journal":{"name":"Advances in Methodology and Statistics","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133209531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Asymptotic normality of the optimal solution in multiresponse surface mathematical programming 多响应面数学规划中最优解的渐近正态性

Advances in Methodology and Statistics Pub Date : 2015-01-01 DOI: 10.51936/bbsc6124

J. A. Díaz-García, F. Caro-Lopera

引用次数: 0

How to improve statistical literacy? 如何提高统计素养?

Advances in Methodology and Statistics Pub Date : 2015-01-01 DOI: 10.51936/xcxb9472

A. Ferligoj

引用次数: 13

Empirical option weights for multiple-choice items 多项选择项目的经验选项权重

Advances in Methodology and Statistics Pub Date : 2015-01-01 DOI: 10.51936/bfrh1091

G. Sočan

引用次数: 0

distance based measure of data quality 基于距离的数据质量度量

Advances in Methodology and Statistics Pub Date : 2014-07-01 DOI: 10.51936/npie9973

Pavol Král

引用次数: 1

Investments in renewable energy sources in OPEC members 欧佩克成员国对可再生能源的投资

Advances in Methodology and Statistics Pub Date : 2014-07-01 DOI: 10.51936/jjuz8754

A. Romano, G. Scandurra

引用次数: 17

Confidence interval for the process capability index based on the bootstrap-t confidence interval for the standard deviation 基于bootstrap的过程能力指数的置信区间-标准差的置信区间

Advances in Methodology and Statistics Pub Date : 2014-07-01 DOI: 10.51936/vvcb8367

W. Panichkitkosolkul

引用次数: 4

Symbolic covariance matrix for interval-valued variables and its application to principal component analysis 区间变量的符号协方差矩阵及其在主成分分析中的应用

Advances in Methodology and Statistics Pub Date : 2014-01-01 DOI: 10.51936/nbpe2127

K. Kosmelj, J. Le-Rademacher, L. Billard

{"title":"Symbolic covariance matrix for interval-valued variables and its application to principal component analysis","authors":"K. Kosmelj, J. Le-Rademacher, L. Billard","doi":"10.51936/nbpe2127","DOIUrl":"https://doi.org/10.51936/nbpe2127","url":null,"abstract":"In the last two decades, principal component analysis (PCA) was extended to interval-valued data; several adaptations of the classical approach are known from the literature. Our approach is based on the symbolic covariance matrix Cov for the interval-valued variables proposed by Billard (2008). Its crucial advantage, when compared to other approaches, is that it fully utilizes all the information in the data. The symbolic covariance matrix can be decomposed into a within part CovW and a between part CovB. We propose a further insight into the PCA results: the proportion of variance explained due to the within information and the proportion of variance explained due to the between information can be calculated. Additionally, we suggest PCA on CovB and CovW to be done to obtain deeper insights into the data under study. In the case study presented, the information gain when performing PCA on the intervals instead of the interval midpoints (conditionally the means) is about 45%. It turns out that, for these data, the uniformity assumption over intervals does not hold and so analysis of the data represented by histogram-valued variables is suggested.","PeriodicalId":242585,"journal":{"name":"Advances in Methodology and Statistics","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129461837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Optimal unbiased estimates of P{x < y} for some families of distributions 一些分布族P{x < y}的最优无偏估计

Advances in Methodology and Statistics Pub Date : 2014-01-01 DOI: 10.51936/smem2126

M. Obradović, Milan Jovanović, B. Milošević

引用次数: 3