Auxilary Data Ratio Estimation & Its Computation

Use sampling with probability proportional to size, with replacement, to estimate

the mean or total of a population of your choice. One example would be

the average elevation of lakes on a topographic map. In the process of carrying

out the survey and making the estimate, think about or discuss with others the

following:

**(a)**What practical problems arise in establishing a frame, such as a map or

list of units, from which to select the sample?

**(b)**How is the sample selection actually carried out?

**(c)**What special problems arise in observing the units selected?

**(d)**Estimate the population mean or total.

**(e)**Estimate the variance of the estimator used above.

**(f)**Give a 95% confidence interval for the population proportion.

**(g)**How would you improve the survey procedure if you were to do it again?

Auxilary Data Ratio Estimation & Its Computation