Cautions about experimentation and samplingSolutionWhen expe

Cautions about experimentation and sampling?

Solution

When experimentation is done then following must be controlled.

1) Randomisation

2) Local Control

3) Replication (Repeteation)

the sample must be collected in such a way that all the units in population are given equal chance to be included in the sample. The sample must represent all parts of the population when the population is not homogeneous.