Measures Of Central Tendency & Dispersion (A03)

Question 1

Mean

Answer 1

• Representative as a whole
• Easily distorted by extreme values

Question 2

Median

Answer 2

• Unaffected by extreme scores
• Less sensitive as important values may be ignored

Question 3

Mode

Answer 3

• Not representative

Question 4

Range

Answer 4

• Easy to calculate
• Unrepresentative if extreme values are present

Question 5

Standard Deviation

Answer 5

• Precise measure in comparison to mean
• Can be distorted by an extreme value