Explore BrainMass

The imporrtance of collecting data randomly

The reading material speaks about collecting data to create control charts or determining process capabilities. Why is it important to ensure that the data is randomly collected?

Solution Preview

When collecting data for statistical inferences about anything, whether it be polls, for marketing data, or to analyze a process, the data collected must be done so randomly so as to ensure that the sample is an accurate representation of the population at large. Biases, ...

Solution Summary

An essay describing the importance of collecting data randomly