Measures of central tendency

• What are the three measures of central tendency mentioned?

  Mean, median, and mode
• How is the mean calculated?

  Add all data items and divide by count
• Why is the mean considered the most sensitive measure?

  It considers all data items in calculation
• What is a disadvantage of the mean?

  It can be distorted by extreme values
• What is the definition of the median?

  The middle value in an ordered list
• How do you find the median when there is an even number of data items?

  Average the two middle items
• Why is the median easier to calculate than the mean?

  It is not affected by extreme scores
• What is a disadvantage of the median?

  It does not reflect all data items
• What is the mode?

  The most common data item
• How do you identify the mode in a data set?

  Arrange data and find highest frequency
• Why is the mode easier to calculate than the mean?

  It is not affected by extreme scores
• What is a disadvantage of the mode?

  Not useful when there are several modes