Question

A teacher wants to determine why students signed up for his summer statistics class. He asked a randomly selected 50 (of the 275) registered to select one of four reasons (convenience, liked his teaching style, needed it to graduate, or other) on an online quiz. Identify the experimental unit of interest to this problem

a-The question he asked to the 50 students

b-The 50 students he collected information from.

c-A single student registered in his summer class

d-All 275 students registered in his class

Answer 1

Here the experimental units of interest to this problem are

b-The 50 students he collected information from.

Experimental units mean those on which the experiments are to be done. In the field experiment for checking the fertility of the land, the experimental units are the land included in that experiment, If we want to compare the effect of two drugs, we may give those drugs to randomly selected some patients, in this case, patients are the experimental units.