Random without replacement is not random: Caveat emptor
نویسندگان
چکیده
منابع مشابه
Caveat Emptor: Random Number Generators In Geospatial Analysis
Many analyses within the field of GIS apply stochastic methods and systems, such as Monte Carlo techniques, dynamic modelling, stochastic simulation, artificial life and simulated data development. A pseudorandom number generator (PRNG) is employed within all these analyses, which can affect the validity of any results, yet GIS articles rarely report on the PRNG being used or on its settings. N...
متن کاملSerum starvation: caveat emptor.
Serum starvation is one of the most frequently performed procedures in molecular biology and there are literally thousands of research papers reporting its use. In fact, this method has become so ingrained in certain areas of research that reports often simply state that cells were serum starved without providing any factual details as to how the procedure was carried out. Even so, we quite obv...
متن کاملRare bladder tumors: caveat emptor.
The authors on “Solitary Extramedullary Plasmacytoma of the Bladder” have provided a quick and accurate diagnosis, work-up, and treatment of this solitary extramedullary plasmacytoma. Solitary extramedullary plamacytomas are rare, and account for only 3% of all plasma cell malignancies. Of the 3% of plasma cell malignancies that are diagnosed, the bladder is one of the least common locations. T...
متن کاملCaveat Emptor on Sublingual Immunotherapy.
The synthesis of clinical trials of sublingual immunotherapy for grass pollen allergy by Di Bona et al1 in this issue indicates an unimpressive small effect, and the efficacy is even smaller in the United States compared with European populations. However, what was impressive is the 70.0% (1817 of 2597 patients) proportion experiencing adverse effects (mostly mouth itching or burning and gastro...
متن کاملTwo-Stage DEA: Caveat Emptor
This paper examines the wide-spread practice where data envelopment analysis (DEA) efficiency estimates are regressed on some environmental variables in a secondstage analysis. In the literature, only two statistical models have been proposed in which second-stage regressions are well-defined and meaningful. In the model considered by Simar and Wilson (2007), truncated regression provides consi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Behavior Research Methods
سال: 2008
ISSN: 1554-351X,1554-3528
DOI: 10.3758/brm.40.4.961