5 2 1 9 8 7 July 8, 2019 16 32 64 128 In 2 9 1 5 8 7 the median is 7 1 9 8 2 5 estimate each sum or difference − 5x 5 )+ 9 − 2 1 10x 8 )+ 7 2 5 8 x 1 7 9 1 2x 9 8 7 5 2 5