Two are true, one is not

Exercise and reference answers

Questions

1. False statement

   The mean uses only two

   Statements

   1. The mean uses every observation
   2. The range uses only two
   3. The mean uses only two

2. False statement

   An extreme value leaves both unchanged

   Statements

   1. An extreme value leaves both unchanged
   2. An extreme value shifts the mean
   3. An extreme value widens the range

3. False statement

   Averages describe the scatter

   Statements

   1. Averages describe the centre
   2. Averages describe the scatter
   3. Spreads describe the scatter

Explanation