Analysis-descriptive statistics

Analysis-descriptive statistics

1. MODE

   • ADV: nominal data
   • DISADV: least useful, does not fully summarise, principle mode has range of values, value depends on classes

2. MEDIAN

   • ADV: equal weighting, representative, ordinal/interval/ratio data
   • DISADV: different data sets give same value, no further use, misleading if scores cluster

3. MEAN

   • ADV: most common, used in other tests, accurate summary
   • DISADV: not always appropriate, unrepresentative if data skewed

4. RANGE

   • ADV: simple, quick
   • DISADV: no info on dispersion, ignores all but 2, vulnerable to rogue scores

5. IQR

   • ADV: more representative, avoids rogue scores, ordinal data
   • DISADV: loses 50% of information