65
All of the integers from 64 down to 57, and from 55 down to 39, are missing.
-20
53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64
50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70
54 55 56 57 58 60 62 63 64 65 66 68 69
mean = (65 + 56 + 57 + 75 + 76 + 66 + 64)/7 = 65.57 median = "middle" number = 65 mode = most common number = all are equally common
65,56,57,75,76 ,68,64. First of all rearrange the terms in RANK order. Hence 56,57,64,65,66,75,76. MEDIAN. Select the absolute middle term from the rank order, which is 65. 65 is the Median. NB There are three terms to either side of this number. MODE. Select the term that occurs most frequently. Since all the terms occur only once, then you select the middle term, which is 65 again. MEAN. You add all the terms and then divide by the number of terms. Hence [56+57+64+65+66+75+76] / 7 => 459/7 => 65.57142857... ~ 65.57 ( 2 d.p.) ( The Mean) RANGE . is the difference between the highest value and the lowest value. Hence 76 - 56 = 20 ( The range)
All of the integers from 64 down to 57, and from 55 down to 39, are missing.
-20
The composite numbers between 50 and 65 are 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65
53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64
50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70
54 55 56 57 58 60 62 63 64 65 66 68 69
They are32 33 34 35 36 3839 40 42 44 45 4648 49 50 51 52 5455 56 57 58 60 6263 64 65 66 68 69They are32 33 34 35 36 3839 40 42 44 45 4648 49 50 51 52 5455 56 57 58 60 6263 64 65 66 68 69They are32 33 34 35 36 3839 40 42 44 45 4648 49 50 51 52 5455 56 57 58 60 6263 64 65 66 68 69They are32 33 34 35 36 3839 40 42 44 45 4648 49 50 51 52 5455 56 57 58 60 6263 64 65 66 68 69
65
Range: 24 Median: 59.5 Mode: 57, 61, 58, 54, 68, 51, 65, 75
These: 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69.