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Download full textKaiser, Javaid – 1983
A simulation study was conducted to identify the best hot-deck variation to impute missing values. The three variations included in the study were the hot-deck random, the hot-deck sequential, and the hot-deck distance. The properties of these methods were investigated under three levels of the proportion of incomplete records and four levels…
Descriptors: Correlation, Estimation (Mathematics), Matrices, Multivariate Analysis
Porat, Marc Uri; Rubin, Michael R. – 1977
This report series defines and measures the "information activity" within the national economy. "Information activity" is defined to include those specific industries and occupations whose primary function is to produce, process, or transmit economically valuable information. This volume consists of input-output tables showing…
Descriptors: Cost Indexes, Economic Research, Industry, Information Utilization
Porat, Marc Uri; Rubin, Michael R. – 1977
This report series defines and measures the "information activity" within the national economy. "Information activity" is defined to include those specific industries and occupations whose primary function is to produce, process, or transmit economically valuable information. Changes in the national labor force are analyzed…
Descriptors: Cost Indexes, Economic Research, Industry, Information Utilization
PDF pending restorationPorat, Marc U. – 1977
This report series defines and measures the "information activity" within the national economy. "Information activity" is defined to include those specific industries and occupations whose primary function is to produce, process, or transmit economically valuable information. Changes in the national labor force are analyzed…
Descriptors: Economic Research, Employment Statistics, Industry, Information Utilization
Porat, Marc U. – 1977
This report series defines and measures the "information activity" within the national economy. "Information activity" is defined to include those specific industries and occupations whose primary function is to produce, process, or transmit economically valuable information. Changes in the national labor force are analyzed…
Descriptors: Cost Indexes, Economic Research, Industry, Information Utilization
Porat, Marc Uri; Rubin, Michael R. – 1977
This report series defines and measures the "information activity" within the national economy. "Information activity" is defined to include those specific industries and occupations whose primary function is to produce, process, or transmit economically valuable information. Changes in the national labor force are analyzed…
Descriptors: Cost Indexes, Economic Research, Industry, Information Utilization
Wyman, W.C. – 1974
This paper is an extended series of appendices to the report "Exploring the T.R.Q.: An Assessment of the Effectiveness of the Teachers' Rating Questionnaire," Report Number 123. It should be most useful to those familiar with multiple regression analysis and factor analysis and wishing a more complex record of the statistical procedures…
Descriptors: Correlation, Elementary Education, Evaluation, Factor Analysis
Scheetz, James P.; Forsyth, Robert A. – 1977
Empirical evidence is presented related to the effects of using a stratified sampling of items in multiple matrix sampling on the accuracy of estimates of the population mean. Data were obtained from a sample of 600 high school students for a 36-item mathematics test and a 40-item vocabulary test, both subtests of the Iowa Tests of Educational…
Descriptors: Achievement Tests, Difficulty Level, Item Analysis, Item Sampling
Verwey, C. T. – 1978
Educational planners are concerned with the inflow of pupils in order to plan for adequate facilities and sufficient teachers. Statistics on repeaters, however, enable the determination of the flow of pupils through and from the educational system. Since repeaters cost educational systems double in the form of expenses for teachers and equipment,…
Descriptors: Academic Failure, Cohort Analysis, Cost Estimates, Dropout Rate
Iowa State Univ. of Science and Technology, Ames. Dept. of Home Economics Education. – 1974
The study of task identification in family and community services presents statistical correlations of task frequencies obtained by questionnaire for the occupations of visiting homemaker or homemaker home/health aide, family planning health aide, counselor on alcoholism, management aide in low-income housing projects, deputy juvenile probation…
Descriptors: Community Services, Family Problems, Home Health Aides, Home Management
