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Richard T. Curtin is an American economist, academic and researcher. He is a Research Professor and has been the Director of Consumer Sentiment Surveys at University of Michigan since 1976. [1] Curtin has conducted research on the formation of expectations and the way economic expectations influence trends in the macro economy.
There are a few reviews of free statistical software. There were two reviews in journals (but not peer reviewed), one by Zhu and Kuljaca [26] and another article by Grant that included mainly a brief review of R. [27] Zhu and Kuljaca outlined some useful characteristics of software, such as ease of use, having a number of statistical procedures and ability to develop new procedures.
This free software had an earlier incarnation, Macsyma. Developed by Massachusetts Institute of Technology in the 1960s, it was maintained by William Schelter from 1982 to 2001. In 1998, Schelter obtained permission to release Maxima as open-source software under the GNU General Public license and the source code was released later that year ...
GNOME Calculator, a software calculator. A software calculator is a calculator that has been implemented as a computer program, rather than as a physical hardware device. They are among the simpler interactive software tools, and, as such, they provide operations for the user to select one at a time. They can be used to perform any process that ...
Chegg acquired software company 3D3R in late 2011 to develop its digital textbook product, kickstart its mobile product group, and open an engineering office in Rehovot, Israel. [31] In June 2014 Chegg acquired online tutoring platform InstaEDU, for a reported $30 million, [ 32 ] renaming the division Chegg Tutors , [ 27 ] [ 33 ] and in October ...
Created in 1981 by Jerry L. Hintze, NCSS, LLC specializes in providing statistical analysis software to researchers, businesses, and academic institutions. It also produces PASS Sample Size Software which is used in scientific study planning and evaluation. The NCSS package includes over 250 documented statistical and plot procedures.
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Matched or independent study designs may be used. Power, sample size, and the detectable alternative hypothesis are interrelated. The user specifies any two of these three quantities and the program derives the third. A description of each calculation, written in English, is generated and may be copied into the user's documents.