Replication is used to ensure there is an adequate number of observations in each experimental condition.
<h3>What is observation?</h3>
Information from a primary source is actively acquired through observation. Observation of living things makes use of the senses. Using scientific tools to perceive and record data is another way that observation can be used in science. The phrase can also be used to describe any data gathered for the scientific endeavor. Observations can be quantitative if a numerical value is assigned to the observed phenomena by counting or measuring, or qualitative if just the existence or absence of a property is documented.
