ABSTRACT
Simple random sampling is the most basic form of probability sampling. There are two subtypes, namely simple random sampling with replacement and simple random sampling without replacement. In simple random sampling without replacement of a finite population, every possible sample of n units has an equal probability of being selected. The simple random sample of size 40 units is used to estimate the total mass of soil organic matter (SOM) in the population. First, the population mean is estimated. This chapter shows the estimated cumulative distribution function, estimated from the simple random sample of 40 units from Voorst. The steps are at the unique values of SOM in the sample. The chapter shows how to compute a confidence interval, and describes the sampling distribution of the estimator of the mean SOM concentration. It presents simple random sampling of circular plots, which is common in forest inventory, vegetation surveys, and agricultural surveys.
