If one grouping of trees has an average height of 86.57 and another grouping of trees has a total height of 86.51 what is the difference between the mean heights of the trees
The difference between the mean heights of the trees is 0.06.
To calculate this, subtract the total height of the second grouping from the average height of the first grouping:
86.57 - 86.51 = 0.06