Section 14.3: The Normal Curve

14.3 Outline

  1. Cumulative distributions
  2. Bell-shaped curves
    1. normal distribution
    2. continuous distribution
    3. variations of normal curves
  3. z-scores
    1. standard normal distribution table
    2. formula
    3. normal curve interpretations


14.3 Essential Ideas

A cumulative frequency is one for which the total number of cases having any given score, or a score that is lower.

Here is a normal curve: