find the mean, median and mode of the data set. Round to the nearest tenth.
77,78,96,90,99,89,81,79,82,79,76,98,77,84,92,78,70,69,82,89,95,89
77,78,96,90,99,89,81,79,82,79,76,98,77,84,92,78,70,69,82,89,95,89