... in a set of data Examples Values 10 12 13 14 Frequency (mode=9) 1 1 Values 10 12 13 14 Frequency (no mode) 1 1 1 1 Values 10 12 13 14 Frequency (mode= 9, 12 ) 1 3 1 Quartiles Quartiles: divide a ... 30 12 30 but less than 40 14 12 40 but less than 50 38 26 =12 +14 50 but less than 60 18 63 =12 +14 +38 60 but less than 70 12 82 =12 +14 +38 +18 70 but less than 80 94 =12 +14 +38 +18 +12 Total 10 0 10 0 =12 +14 +38 +18 +12 +6 ... numbers: 14 , 10 , 13 , 2, 21, 15, 18 , 4, 6, 18 , 7, 8, 20, First, arranging these number ascending order: 2, 3, 4, 6, 7, 8, 10 , 13 , 14 , 15 , 15 , 16 , 18 , 18 , 19 , 20, 21 The array includes 17 terms...