Types of survey, e.g., household, demographic, health, etc.  Planning of surveys-objective; target populations; questionnaire design; pilot survey. Regression and correlation analysis: methods for simple linear regression ― graphical method, method of least squares (with derivation); interpretation of coefficients; simple coefficient of determination; correlation coefficient; standard error of estimate. Rank order correlation analysis: introduction to rank correlation; Spearman’s coefficient; Kendall’s coefficient.