• Unit 5: The Normal Distribution

    Your SAT scores are here! You scored 520 on Math and 600 on Verbal. Should you jump for joy, or should you groan and sign up for a retest date?

    While there are many factors affecting your reaction, it will always be useful to know how your performance compares to that of others who took the test.

    SAT scores, IQ scores, cockroach lengths, gestation time of elephants, and a multitude of other measures follow a bell shape, or normal, distribution. In this unit, we will study the normal curve in great detail. Knowledge of the normal curve, its characteristics, and the calculation of probabilities for variables that are normally distributed is critical to success in this course. In addition, you will find out how easy it is to determine how well you fared on the SAT or if the used car you want to buy is overpriced.

    Completing this unit should take you approximately 8 hours.