Central Tendancy

Question 1

Parameter

Answer 1

Characteristic of a population

Question 2

Statistic

Answer 2

Characteristic of a sample

Question 3

Mean

Answer 3

Statistical average.

Influenced by extreme scores.

Question 4

Median

Answer 4

Middle-most position
The point above and below where half of the scores fall.
Not influenced by extreme scores; can be more realistic measure of central tendency than mean.

Question 5

Mode

Answer 5

The score that occurs most frequently.
Shows the most typical case.
Quickest estimate of central tendency.