Is about making sure experimental and control groups are equivalent, and is about selecting participants from a population so that the selected group is representative of that population.

random assignment, a random sample

Explanation:

In an experiment which requires groups the groups are to be made sure that members of each group is selected at random. This is known as random assignment.

The selection of participants from a population randomly i.e., having no pattern is called random sampling and the sample is called random sample. The random sample is selected as such in order to be representative of the population.

answer; /// pinkberry and red mango are different in that pinkberry tries to convey a sense of (playfulness)while red mango tries to communicate (nutritional benefits and

answer: there were new carvings etched into the back of the sculpture and each shoulder was turned into a symbol of the birdman.