Which of the following measurements likely has a normal distribution, at least approximately?
A)Weights of 10-year old boys.
B)IQ scores of 12 graders.
C)Nationwide scores on the SAT (Scholastic Achievement Test).
D)All of the above.

Question

Quizplus · Accepted Answer

Many natural and human-made phenomena, including weights, IQ scores, and standardized test scores, tend to distribute normally in large populations. This is due to the Central Limit Theorem, which states that the distribution of sample means approximates a normal distribution as the sample size becomes large, assuming all samples are identical in size and independent of each other.

Which of the Following Measurements Likely Has a Normal Distribution