These are the means and standard deviations for examples of heights from two kinds of trees.
table:
tree a - (mean: 25ft) (standard deviation: 5ft)
tree b - (mean: 60 ft) (standard deviation: 12 ft)
select the two true statement.
a. tree a's heights are more spread out than tree b's heights.
b. tree a's heights are less spread out than tree b's heights.
c. tree a has a greater average height than tree b.
d. tree a has a lower average height than tree b.