Dr. Johnson is trying to establish norms for his new test. He determined that 50% of the people in the population are Hispanic, 20% are Caucasian, 15% are Asian, and 15% are African American. He uses the same proportions when he creates a
A)valid test.
B)representative sample.
C)random sample.
D)test population.

Question

Quizplus · Accepted Answer

A representative sample is one that mirrors the population demographics or characteristics it is meant to represent. By using the same proportions of ethnic groups in his sample as are present in the population, Dr. Johnson is ensuring that his sample is representative of the population.

Dr Johnson Is Trying to Establish Norms for His New