AtlasSession 2L5: Introduction to Numerical Concepts in Researchp.14–25
Summary statistics
- What is data?
- Data and types of variables
- Summary statistics
Fig. 1
Ultimate tensile strength of 12 electrospun PCL meshes (MPa)
Fig. 1. Box plot of 12 meshes. The balance point (mean) is 8.53 MPa and the middle value (median) 7.71 MPa; the long tail is to the right. Report the median and quartiles.
- Balance point (mean)
- 8.53 MPa
- Middle value (median)
- 7.71 MPa
- Long tail
- to the right
- Report
- median and quartiles
Distribution Lab · First look
Level 1 · First look · Lecture 5 · p.14–25
Describe a set of numbers by a typical value and how spread out they are, and turn a count into a percentage.
Compute mean/SD, median/quartiles/IQR, range, proportion and odds, and convert between risk and odds.
Why summarise (the step you are on)
A team's twelve heights shrink to 'typical value plus spread'; then twelve mesh strengths do the same.
Like a team’s twelve heights, these twelve mesh strengths shrink to a typical value, the middle at 7.71 MPa, and how spread out they are: the box holds the middle half.