Answer: Mean < Median < Mode.
- A Mean = Median = Mode
- B Mean > Median > Mode
- C Mean < Median < Mode
- D Mode < Median < Mean
Correct answer: C. Mean < Median < Mode
Explanation: Negative (left) skew: long tail to the left. Mean pulled left by extreme low values. Mean < Median < Mode.
In a perfectly normal (bell-shaped) distribution, mean, median, and mode all coincide at the centre; about 68% of data falls within 1 standard deviation of the mean, 95% within 2, and 99.7% within 3 - the empirical rule used to judge how typical or extreme a value is.
Concept context
Mean, median, mode, standard deviation, and data interpretation