Evidence based medicine and statistics

Question 1

Describe a box and whisker plot

Answer 1

Central rectangle presents the interquartile range with the ends of the box corresponding to the lower and upper quartiles of the data.

The median value is a line drawn through the box

Whiskers represent the minimum and maximum values

Outliers are represented as crosses outside the box and whiskers

Question 2

What are the different types of data?

Answer 2

CATEGORICAL
- Ordinal (disease staging, pain score)
- Nominal (blood group, gender)

QUANTITATIVE
- Discrete (number of children)
- Continuous (height, weight)