To estimate a population mean, the sample mean is often used as an estimator. However, a different estimator is called the sample midrange, given by the formulasample minimum + sample maximum

2.

(c) The following table shows the values, in thousands of dollars, of40randomly selected houses in the city.

(i) Calculate the sample midrange for the data.

(ii) Explain why the sample midrange might be preferred to the sample mean as an estimator of the population mean.