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Questions related from James R Knaub
What are the various statistical software systems available which will allow you to enter regression weight, w, in weighted least squares (WLS) regression, in addition to SAS? . Thank you to...
10 October 2019 9,324 11 View
Which statistical software will allow entry of a regression weight in polynomial regression? If we factor heteroscedastic estimated residuals into random and nonrandom factors, we can use a...
09 September 2019 6,239 21 View
Heteroscedasticity versus heterogeneity of variance Heteroscedasticity in regression means the variance of y given x is different for different values of x. (For multiple regression, if y* is...
11 November 2018 9,941 16 View
By WLS we mean weighted least squares regression. On page 111 in Brewer, KRW (2002), Combined survey sampling inference: Weighing Basu's elephants, Arnold: London and Oxford University Press, he...
04 April 2018 7,348 6 View
Design-based classical ratio estimation uses a ratio, R, which corresponds to a regression coefficient (slope) whose estimate implicitly assumes a regression weight of 1/x. Thus, as can be seen...
10 October 2017 2,782 26 View
I have seen several references to "impure heteroscedasticity" online as heteroscedasticity caused by omitted variable bias. However, I once saw an Internet reference, as I recall, which reminds...
10 October 2017 8,615 4 View
Is it disjoint, as in the US, or coordinated, as in the case of Statistics Canada, or the Italian National Institute of Statistics? What advantages and/or disadvantages do you see?
08 August 2017 10,142 8 View
Possible examples found recently on ResearchGate: ...
04 April 2017 7,528 1 View
Researchers seem to often want to look for a "test" to show whether or not they should conclude the "truth" of a given 'hypothesis' (of some sort). But often what is sought is not something that...
03 March 2017 1,444 24 View
I have noted classical problems in statistical jargon, such as the inherent overstatement in the term "normal distribution," and the hugely misleading and basically inappropriate use of the word...
01 January 2017 7,334 16 View
Where might I find a finite population dataset, with one dependent and two independent variables, with population size approximately 15 < N < 100, and all continuous (no count) variables? ...
01 January 2017 3,577 7 View
It seems odd that the general population often pays attention to statistics, but apparently, generally only to point estimates. Variance is not given much attention, and bias doesn't fair well...
10 October 2016 1,752 0 View
I am interested in historical references such as the examples below. This question is with regard to inference from all surveys, but especially for establishment surveys (businesses, farms,...
06 June 2016 5,709 5 View
Much work by W G Cochran might apply, and by Sir Ronald Fisher, as well as other historical developments, such as the Youden Square. I'm partial to work by Ken Brewer which applies with regard to...
06 June 2016 2,747 5 View
Currently ResearchGate provides enough space under an "abstract" section that I have also used it to list errata and any other thoughts I'd like to include post hoc. It occurred to me, however,...
01 January 2016 5,431 29 View
For periodically produced official statistics from a government agency, what information on sampling error and nonsampling error, say standard errors and bias, would you want to see? What other...
01 January 2016 4,198 33 View
In Galit Shmueli's "To Explain or Predict," https://www.researchgate.net/publication/48178170_To_Explain_or_to_Predict, on pages 5 and 6, there is a reference to Hastie, Tibshirani, and...
12 December 2015 2,534 5 View
Are omitted variables a subset of lurking variables, where the word "omitted" is only used when bias is the focus? Or perhaps there is some other matter of context? I find I am not clear on the...
12 December 2015 8,673 4 View
At the following link, on the first page, you will see a categorization of heteroscedasticity into that which naturally should often be expected due to population member size differences, and that...
12 December 2015 4,079 9 View
For sample size needs for inference for continuous data or for proportions, William Cochran - Cochran, W.G(1977), Sampling Techniques, 3rd ed., John Wiley & Sons - noted that we need...
11 November 2015 5,274 6 View
Fellow RGers: A recent survey statistics and methodology journal had an article on the use of splines, and as one example they used data with which I am very familiar. In that case, however, I...
11 November 2015 3,179 11 View
How do you increase the visibility of relevant past work? I have found it frustrating to find people authoring work which presents concepts that I explored and improved upon many years ago. As...
07 July 2015 8,023 34 View
Is multivariate regression more useful for analysis than for prediction? Consider these two internet references: Reference 1:...
07 July 2015 2,557 9 View
As a retired statistician, having joined ResearchGate (RG), I could not help but notice that statistics journals have very low impact factors, especially compared to the extremely large number of...
06 June 2015 3,088 10 View
When would you naturally expect OLS regression to be completely appropriate? As the size measure related to the independent variable y gets larger, one would usually expect y to tend to have...
06 June 2015 8,683 7 View
I saw a question/thread to that effect recently, but have not been able to find it again. I have a suggestion or two that I would like to make, but I would rather add to that person 's thread than...
05 May 2015 808 5 View
How might responsible decision making be encouraged? It seems universal and timeless that for any organization, people who 'rise' to positions of authority and management are very often...
05 May 2015 6,098 45 View
Why, in econometrics, survey statistics, and perhaps elsewhere, is the word "prediction" used to indicate a cross sectional estimate of the dependent variable, when it is therefore not a...
05 May 2015 1,637 8 View
Specific examples are of interest, as well as general approaches. As examples re data editing for continuous data for establishment surveys, the first link below leads to some slides for a...
02 February 2015 4,877 44 View
In finite population survey statistics, for survey methodology and data analysis, data are stratified to reduce overall variance. But sometimes publishing the individual categories becomes...
02 February 2015 1,416 17 View
Scatterplots are a useful tool here.
01 January 2015 5,248 2 View
Many might first think of Bayesian statistics. "Synthetic estimates" may come to mind. (Ken Brewer included a chapter on synthetic estimation: Brewer, KRW (2002), Combined survey sampling...
01 January 2015 6,884 10 View
Heard a math or related joke? Perhaps it has hidden instructive properties? Perhaps not? Here is one that is just arithmetic (rounding), but appears scientifically worded. I do not know its...
12 December 2014 9,914 8 View
For example, consider William Shakespeare: "To be or not to be?" He was very much a popular entertainer, but his work had depth. Also consider Samuel L. Clemens, he tried to shock and provoke...
12 December 2014 9,666 25 View
In the U.S., it may be more difficult to obtain good administrative data for an entire population than in many other countries. Partial data may be useful, but some may try to use it for...
12 December 2014 649 8 View
This is a question for philosophical discussion: I saw the interesting example at the link below (excerpt from East Tennessee State University on Freedman, et.al.). It is meant to be a simple...
11 November 2014 1,660 21 View
Looking back after retirement, and considering the world as a whole, I believe it a huge problem that those who come to a position of authority often do so for reasons that do not make them...
11 November 2014 8,112 1 View
In Chapter 4 of Lohr, S.L.(2010), Sampling: Design and Analysis, 2nd ed., Brooks/Cole, she explains the design-based and model-based CRE. On pages 158-160 of Cochran, W.G.(1977), Sampling...
11 November 2014 4,995 9 View
In 2007 I did an Internet search for others using cutoff sampling, and found a number of examples, noted at the first link below. However, it was not clear that many used regressor data to...
11 November 2014 8,785 5 View
My experience with regression is primarily with regression through the origin, not necessarily with one regressor, but let us consider that. This is generally the case when examining establishment...
11 November 2014 3,693 29 View
An updated sample selection is being determined for one of our most comprehensive energy establishment surveys, to more efficient estimate for the current population, as the sample has not been...
04 April 2014 9,851 2 View
What additional statistics textbooks do you know, which do a good job of covering both the design-based and the model-based classical ratio estimator (CRE)? Here are the survey sampling textbooks...
01 January 1970 1,431 13 View
Because I primarily worked with official statistics from many small, highly skewed establishment surveys of diverse entities, using relatively simple regression to predict for...
01 January 1970 2,552 1 View
In https://www.researchgate.net/publication/333642828_Estimating_the_Coefficient_of_Heteroscedasticity there are examples where the data indicated heteroscedasticity at some level, for regression...
01 January 1970 4,555 2 View
