Explain the difference between a 'measure of central tendency' and a 'measure of spread'.

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2020). The mark or mark type is shown in brackets.

1. [1] 1 mark for definition of measure of central tendency
2. [1] 1 mark for definition of measure of spread
3. [] Difference is implicit
4. [1] A measure of central tendency gives the 'middle'/average of the data = 1
5. [1] Measures of central tendency show a typical score in the set = 1
6. [1] A measure of spread shows the dispersion/variation (of scores) in a set = 1
7. [1] Measures of spread look at how big the differences are between scores = 1
8. [0] Measures of central tendency are the mean, median and mode = 0 (examples not explanation)
9. [0] Measures of spread are the range and the standard deviation = 0 (examples not explanation)