This week our learning is on z scores, characteristics of the normal curve, central limit theorem, probability concepts and how they affect research.

Question 1. Imagine that you recently took an exam for certification in your field. The agency has published the results of the exam and 75% of the test takers scored below the average. In a normal distribution, half of the scores would fall above the mean and the other half below. How can what the agency published be true?

Question 2. Why do researchers use z scores to determine probabilities? what are the advantages?

School - NCU