Measures of central tendency + dispersion

Question 1

Measures of central tendency

Answer 1

Mean, Median, Mode

Question 2

Mean - arthimetic average

Answer 2

Total of all values in a set of data divided by the number of values

Question 3

Strengths: Mean

Answer 3

• the most sensitive of the measures as it incldes all the values in the data set = more representative of the data as a whole

Question 4

Limitations: Mean

Answer 4

• Easily distorted by extreme values (takes into account all the values) = could lead to not being representative

Question 5

Median

Answer 5

The middle value in a set of data when scores are arranged from lowest to highest value

Question 6

Strengths: median

Answer 6

• Not affected by extreme scores
• Good for ordinal data
• Esay to calculate

Question 7

Limitations: median