@book{7330,
	author = {Ofosu, J. B. and  Hesse, C. A.},
	title = {Elementary statistical methods /},
	publisher = {Excellent Publishing and Printing},
	year = {2011.},
	address = {Accra:},
	edition = {2nd. ed.:},
	note = { 1. The nature of statistics -- 2. Descriptive statistics -- 3. Probability -- 4. Probability distributions -- 5. Estimation -- 6. Hypothesis testing -- 7. Linear regression and correlation .}
}