During a 6 year study Daunte documents annual moose survival by monitoring a samp of radiomarked individuals He obtains the following 6 estimates of annual survival and calculates their mean and standard deviation sd Which statement best describes the estimate sd S 0 0453 S c 0 883 0 787 0 914 0 825 0 838 0 870 mean S 1 0 8528333 sd S 1 0 04533174 This is a measure of process variation or truc variation in annual survival This is a measure of noise or measurement error in annual survival This is a measure of both process variation and noise