@book{100255,
	author = {Spiegel, Murray R. and Stephens, Lary J.},
	title = {Schaum's Outline of Theory and Problems of Statistics.},
	publisher = {Tata McGraw-Hill},
	year = {1999},
	series = {Schaum's Outlines series},
	address = {New Delhi},
	edition = {3rd ed.}
}