Inclusive Graphic Standard Deviation
Description
Is the measure of sorting or variation of a particle size distribution in phi scale; can be estimated from the percentages of the particles which correspond to the percentages 95%, 84%, 16% and 5%
Related formulasVariables
| σi | Inclusive Graphic Standard Deviation (ϕ) |
| ϕ84 | Particle's percentage which corresponds to 84% phi unit (ϕ) |
| ϕ16 | Particle's percentage which corresponds to 16% phi unit (ϕ) |
| ϕ95 | Particle's percentage which corresponds to 95% phi unit (ϕ) |
| ϕ5 | Particle's percentage which corresponds to 5% phi unit (ϕ) |
Categories
External links