Trough-to-peak ratios: Some statistical considerations

Peak and Trough.

Diagnosis of Email Spams – Some Statistical Considerations

–While email is one of the fastest form of communication, the user is frequently faced with receiving unsolicited emails called spams. Nonspam mails are known as hams which are legitimate mails. It is practically very difficult to perfectly classify a mail into spam or ham basing on the content or subject of the mail. Several statistical methods are available which classify mails with some chan...

Satellite peak ratios according to stripes theory

This paper looks at the expected results for a neutron diffraction study according to stripes theory, paying attention to the ratio of incommensurate to satellite peaks. In particular this paper looks at a square wave profile and the effects of doping on the peaks, for most doping levels seen in the literature (hole concentrations of 1/6 < p < 1/10) it appears that in order to detect satellite ...

Dow Theory’s Peak-and-Trough Analysis Justified

In the analysis of dynamic financial quantities such as stock prices, equity prices, etc., reasonable results are often obtained if we only consider local maxima (“peaks”) and local minima (“troughs”) and ignore all the other values. The empirical success of this strategy remains a mystery. In this paper, we provide a possible explanation for this success. 1 Formulation of the Problem Peak-and-...

Some statistical and logical considerations when rescoring tests

When tests or portions of tests are scored subjectively by raters, a rescoring will yield a change in the ratings of some examinees. In a test with a xed passing score a rescoring will result in the change of some pass/fail decisions. The number of changes depends on three things: the reliability of the rating system, the proportion of examinees that initially pass, and the policy used to incor...