can you use different data to construct scores? a. tree b. taller trees c. height trees e. symmetry d. covariance d. height trees d. height trees d. height trees d. height trees how do you calculate the z score for trees? can you combine z scores can you group z scores what is the covariance of the guess scores? how is the z score of a tree calculated how to find covariance in a tree how to compare the z scores can you combine z scores from similar populations how to combine z scores from same data sets how do z scores work how do you determine the range of z what is the range of the z scores that you get how to use z scores how do you combine z scores why do you use covariance on composites what is the z score for trees which of the following is a common way to combine z scores what is the best way to compare z scores? how do you get z scores for different trees