True or false: what an average tells you

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   An average is a measure of central tendency.

2. Statement is true

   Yes

   Statement

   Two sets with the same mean can be spread very differently.

3. Statement is true

   No

   Statement

   An average alone describes a data set completely.

4. Statement is true

   Yes

   Statement

   A measure of dispersion is needed as well.

5. Statement is true

   Yes

   Statement

   The mean uses every observation.

Explanation