**Definition of Random Sample**

- Random sample is a sample in which every individual or element in the population has an equal chance of being selected.
- Random sample is a representative of the entire population.

**Examples of Random Sample**

- The following are examples of random samples.
- An environmentalist took 9 samples of effluents of an industry at different points.
- A teacher chose a boy and a girl from a group of equally talented boys and girls to lead a parade.

**Solved Example on Random Sample**

Chris has 4 boxes of red, green, and blue marbles. He mixed all the marbles and picked 16 marbles randomly without looking. Would he get a random sample of marbles?

Choices:

A. No

B. Yes

Correct answer: B

Solution:

Step 1:Chris picked 16 marbles randomly from the box without looking, so he doesnâ€™t know which color marble he picked up.

Step 2:All the three colored marbles have equal chance of being selected.

Step 3:So, the event of picking up the 16 marbles is a random sample.

**Related Terms for Random Sample**

- Sample
- Population