It is known that the Capital Asset Pricing Model (CAPM) provides an expression which relates the expected return of an asset to its systematic risk. In a decision making problem involving financial data however, we have to take in account the uncertainty given by the imprecision and the incompleteness of the information. Uncertainty in the data may be treated by considering, rather than a singl...

This paper presents the interval estimate for specific points in polynomial regression: zero of a linear regression, abscissa of the extreme of a quadratic regression, abscissa of the inflection point of a cubic regression. Two different approaches are under study. An application of these two approaches based on quadratic regression in presented: interval estimate for the plant density giving o...

A new method for linear regression analysis of interval-valued data is proposed. In particular, the linear relationship between an interval-valued response variable and a set of interval-valued explanatory variables is investigated by considering two regression models, one for the midpoints (the locations of the intervals) of the response and explanatory variables and the other one for the radi...

Background: Determining the mortality rate of diseases in a community is one of the main components in health care planning of that community. This study used a join point regression model to determine the trend of mortality due to diabetes mellitus (DM) in Iran. Materials and Methods: The data on the rate of mortality due to DM were obtained from the reports of the Iranian Ministry of Healt...