What is being measured?
Comparison uses the midpoint of the published 3–6 in range. Published flower-head width, rather than the highly variable plant height. Growth varies with conditions; this is a horticultural range midpoint, not a population mean.
The comparison uses the midpoint of the stated range. That midpoint is a chosen reference, not a measured population mean.
- Dimension
- flower head diameter
- Reference value
- 4.5 in
- Evidence
- Chosen midpoint of a documented range
- In metres
- 0.1143 m
- Variant
- Flower head only
- Source range
- 3–6 in
- What the range means
- Published flower-head width, rather than the highly variable plant height.
Put the length in perspective
One Common sunflower — flower head represents approximately 1.34 card lengths measured end to end. This is a length ratio; it does not calculate how the objects pack or fit.
Common sunflower — flower head · 0.1143 m
Metre · 1 m
Foot (international) · 0.3048 m