Match the statistic to its formula

Exercise and reference answers

Matching pairs

1. Left

   Mean (deviation method)

   Right

   A + (Σfd ÷ N)

2. Left

   Variance

   Right

   Σfd² ÷ N − (Σfd ÷ N)²

3. Left

   First quartile

   Right

   L + ((N/4 − nb) ÷ nw) × c

Instructions

Tap a statistic on the left, then the formula that finds it.