Central Tendency Summary

Summary

 

an average is a number that represents or is typical of a sample.

three types of average are commonly used. the mean, the median and the mode.

calculators and computer spreadsheets are useful for analysing data.

Key Skills
  • calculate the mean, median and mode from a set of values or a frequency distribution
  • decide on the best of the three averages to use for a particular set of data
  • use calculators and spreadsheets to find averages

Vocabulary

central tendency, average, mean, median, mode, frequency, parameter, statistic,
standard deviation, continuous data, discrete data.