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Showing 4 results for naghizadeh qomi
Mehran Naghizadeh Qomi, Shokofa Kabiri,
Volume 17, Issue 2 (3-2013)
Abstract
In this paper, we investigate the relation between two variables where the one is measured with the ratio or interval scale and the other with the nominal. In this cases, we use from serial correlation coefficient. Computation of some serial coefficient such as biserial and point-biserial coefficient is carried out with some examples and R program.
Mehran Naghizadeh Qomi, Azadeh Kiapour,
Volume 18, Issue 2 (3-2014)
Abstract
In this paper, we obtain unbiased estimators of e using stopping time random variables and simulation.
Mehran Naghizadeh Qomi, Ohammad Taghi Kamel Mirmostafaee, ,
Volume 20, Issue 2 (10-2015)
Abstract
Tolerance interval is a random interval that contains a proportion of the population with a determined confidence
level and is applied in many application fields such as reliability and quality control. In this paper, based on record
data, we obtain a two-sided tolerance interval for the exponential population. An example of real record data is
presented. Finally, we discuss the accuracy of proposed tolerance intervals through a simulation study.
Mehran Naghizadeh Qomi, Azita Norozi Firoz,
Volume 21, Issue 1 (9-2016)
Abstract
Tolerance interval is a random interval that contains a proportion of the population with a determined confidence level and is applied in many application fields such as reliability and quality control. In this educational paper, we investigate different methods for computing tolerance interval for the binomial random variable using the package Tolerance in statistical software R.
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