0 of 9 units read in Mathematics & Statistics

Mathematics & Statistics • Probability & Statistics

Measures of Spread

4 min read

  • Population standard deviation divides by N; sample standard deviation divides by n − 1.
  • The exam usually says "sample" explicitly when it wants n − 1 — but not always, so read the context.
  • Variance is the square of standard deviation and carries squared units.

Check it stuck: a set from Mathematics and Statistics, the knowledge area this unit teaches.

Quiz this area

0 of 9 units read in this chapter