Descriptive statistics | Introducing key terms

Read the words and discuss what you think they might mean before revealing the definition.

	Measures of central tendency — A form of estimation of a mid-point/average in a set of data.
	Mean — The average that is shown by all scores in the data set when they are divided by n.
	Median — The mid-point in a set of data that has been placed in order.
	Mode — The most common value within a set of data.
	Measures of dispersion — A measure that shows the spread of data, whether it is tightly clustered or has a broader spread.
	Range — A value which shows the spread of data, representing the difference between the lowest and highest scores.
	Standard deviation — A value which represents the amount of variation of results from the mean score.