Distribution Curves

• Normal Distribution


  A symmetrical spread of frequency that forms a bell-shaped pattern. The mean, median, and mode are all located at the highest peak.

  
• Skewed Distribution


  A spread of frequency that is not symmetrical, where data clusters at one end.

  
• Positive Skew


  A type of distribution in which the long tail is on the positive (right) side of the peak and most distribution is concentrated on the left.

  
• Negative Skew


  A type of distribution in which the long tail is on the negative (left) side of the peak and most distribution is concentrated on the right.

  
• Label

  A) Positive Skew

  B) Normal Distribution

  C) Negative Skew