@article{MAKHILLPJSS2005387105,
    title = {Study the Differentials, Patterns, Trends and Mathematical Modeling of Expectation of Life (Ex) of Bangladesh},
    journal = {Pakistan Journal of Social Sciences},
    volume = {3},
    number = {8},
    pages = {1060-1064},
    year = {2005},
    issn = {1683-8831},
    doi = {pjssci.2005.1060.1064},
    url = {https://makhillpublications.co/view-article.php?issn=1683-8831&doi=pjssci.2005.1060.1064},
    author = {Md. Rafiqul Islam},
    keywords = {Expectation of life (ex),mathematical modeling,coefficient of determination (R2 ),cross-validity prediction power (CVPP),F-test},
    abstract = {The purpose of the present study is to study the differentials, patterns and trends of expectation of life (ex) of Bangladesh during 1961-1991. For this, the expectation of life (ex) of Bangladesh in the census years 1961, 1974, 1981 and 1991 have been used in this study. A few mathematical models have been fitted to ex and f(x)=x+ex only for male of Bangladesh in 1961 and it is found that they follow polynomial models. The Cross-Validity Prediction Power (CVPP) and F-test are also applied to these models to check the validity and significance of the models.}
    }