MEAN

• WHAT ARE DESCRIPTIVE STATISTICS?

  numerical values that describe patterns in a data set
• WHAT ARE THE TWO TYPES OF DESCRIPTIVE STATISTICS?

  measures of central tendency and measures of dispersion
• WHAT ARE THE MEASURES OF CENTRAL TENDENCY?

  mean, median and mode
• WHAT DO MEASURES OF CENTRAL TENDENCY MEASURE?

  averages
• WHAT DO MEASURES OF CENTRAL TENDENCY TELL US ABOUT?

  performance
• WHAT IS THE LEVEL OF MEASUREMENT OF MEAN?

  interval
• STRENGTHS OF MEAN?

  • most sensitive
  • representative of all data
• WHY IS THE MEAN MOST SENSITIVE AND REPRESENTATIVE?

  includes all values and scores (all data of all participants)
• WEAKNESSES OF MEAN?

  • easily distorted by extreme values
  • not accurate measure to reflect majority