The following scores were obtained from a recent Biochemistry test: 90, 94, 53, 68, 79, 84, 87, 72, 70, 69, 65, 89, 85, 83, 72 a. Determine the mean, median, and mode from these scores b. The data were further analyzed to estimate the dispersion of the data. The total squared difference of each test score from the test average (( )2) was estimated to be 1817. Calculate the standard error of the test scores