Singh, Yogesh Kumar. Fundamentals of research methodology and statistics / By Yogesh Kumar Singh. - 1st ed. - New Delhi : New Age International Pvt Ltd , 2008. - vi,314 p. ; PB 25cm. ISBN: 9788122418864 Subjects--Topical Terms: Survey methodGenetic methodMeasures of central tendency Dewey Class. No.: 001.42 / SINY