Where to Sample the Target Population

A sample collected at random from the target population. 

To analyze the properties of a 100 cm X 100 cm polymer sheet, ten 1 cm X 1 cm samples are to be selected at random and removed for analysis. Explain how a random number table can be used to ensure that samples are drawn at random. 

As shown in the following grid, we divide the polymer sheet into 10,000 1 cm X 1 cm squares, each of which can be identified by its row number and its column number. 

A randomly collected sample makes no assumptions about the target population, making it the least biased approach to sampling. On the other hand, random sampling requires more time and expense than other sampling methods since a greater number of samples are needed to characterize the target population. 

Samples collected from the target population using available information about the analyte s distribution within the population. 

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