Central tendency

• What are the three measures of central tendency?

  Mean, median, mode
• How do we calculate mean?

  Adding up all values and dividing this by the total number of scores
• What is a strength of the mean?

  More representative
• What is a limitation of the mean?

  Easily distorted by extremes
• How do we calculate median?

  Middle value in set when values are arranged lowest to highest
• What is a strength of the median?

  Unaffected by extremes
• What is a limitation of the median?

  Less representative
• How do we calculate mode?

  Most common value