measures of central tendency

• Mean: Outline:

  mean Add all the values together and divide by the amount of values there is.

  Strengths:

  Most sensitive as represents all the data as a whole.

  Weaknesses:

  It can be easily distorted by extreme values. 
• Median: Outline:

  median It is the middle number when values are arranged lowest to highest. 

  Strengths:

  Extreme scores do not affect it, essay to calculate.

  Weaknesses:

  Less sensitive does not represent the data as a whole.
• Mode:

  Outline:

  mode It is the value that appears most within the data set, you can also have two modes which then data is then bi-modal. 

  Strengths:

  Easy to calculate, sometimes the only one that you are able to use .

  Weaknesses:

  Can be a crude measurement it is less sensitive and also when multiple modes the data piece becomes less useful.
• When to use the mean mode and median?

  You use them when you want data at an ordinal, interval, and nominal level.