Question

In a distribution of SAT scores for business students (mean = 610, SD = 20), what's the assumed distribution type?

a) Uniform distribution.
b) Exponential distribution.
c) Normal distribution.
d) Poisson distribution.

Answer 1

The distribution type for SAT scores is typically the normal distribution, which is characterized by a symmetric, bell-shaped curve centered around the mean.

Step-by-step explanation:

The assumed distribution type for SAT scores is the normal distribution. This is based on the characteristics of SAT score distributions, which typically form a bell-shaped curve, indicating that most scores are around the mean and the frequency of scores decreases as you move away from the mean in either direction.

Examples provided indicate that not only SAT scores, but many other types of data are also normally distributed in a variety of fields, like IQ scores, real-estate prices, and final exam scores in some classes. The normal distribution is an essential concept in statistics and is used for various applications, including hypothesis testing and determining probabilities.