Gupta, S. P. Practical statistics / S. P. Gupta. - 9th ed. - New Delhi: S. Chand, c2000. - vi, 557p.: ill.;, figs.;, tables.; maps.; 21cm. Dept. of CSE ISBN: 8121906245 Subjects--Topical Terms: Measures of dispersion Dewey Class. No.: 310 / GUP