S
Statisticale
Hi,
I have an area of forest that has been stratified into 2, & I wish to calculate the +/- 3 standard deviation (sigma) distribution of tree heights in the combined area. The weighting of the first area is 0.73, & the second is 0.27. Means heights are 8.3 & 5.5 meters, with standard deviations of 1.2 & 0.9 meters.
If we make the assumption that co-variance can be ignored, can the combined result be calculated without going to partial derivitaves? If so, how?
Best regards.
I have an area of forest that has been stratified into 2, & I wish to calculate the +/- 3 standard deviation (sigma) distribution of tree heights in the combined area. The weighting of the first area is 0.73, & the second is 0.27. Means heights are 8.3 & 5.5 meters, with standard deviations of 1.2 & 0.9 meters.
If we make the assumption that co-variance can be ignored, can the combined result be calculated without going to partial derivitaves? If so, how?
Best regards.