Spot the odd one out

Exercise and reference answers

Questions

1. Items

   1. Standard deviation
   2. Mean
   3. Median

   Odd item

   Standard deviation

2. Items

   1. Uses every value
   2. Uses two values
   3. Uses every value

   Odd item

   Uses two values

3. Items

   1. Centre
   2. Centre
   3. Scatter

   Odd item

   Scatter

Explanation