Question

Identify each sample, and suggest a population from which it was selected. Then classify the type of data collection used.

A research facility analyzed two groups of rats to determine their reaction to sugar.

Short answer

The sample is the rats selected for research.

The population is all the rats.

The type of data collection used is anobservational study.

Step-by-step solution

Step 1. Identify each sample, and suggest a population from which it was selected.

A sample is some portion of a larger group called the population.

Therefore, the sample is the rats selected for research and the population is all the rats.

Step 2. Classify the type of data collection used.

Observational study is a data collection technique in which data are recorded after just observing the sample.

As, a research facility analysed two groups of rats to determine their reaction to sugar. That is research facility is observing the sample. Therefore, the type of data collection used is observational study.