Answer: Frequencies of different categories.
- A Continuous data measured across a range
- B Frequencies of different categories
- C Change occurring gradually over time
- D Probability values assigned to outcomes
Correct answer: B. Frequencies of different categories
Explanation: Bar graphs display frequencies of categorical data using rectangular bars.
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