Missing Data
20, 32, x      mean = 29
x = 
12, 24, 53, x           mean = 35.5
x =
44, 44, 54, x         mean =50
x = 
75, 76, 80, 82, 95, x       mean = 84
x= 
17, 22, 23, 23, 32, 84, x      mean = 41
x = 
1, 2, 3, 4, x          mean = 17
x =
121, 204, 312, 400, x      mean = 288
x = 
2, 2, 2, 2, 4, 4, 5, 5, 6, x    mean = 4
x = 
7, 7, 7, 7, 7, 7, 7, x        mean = 8
x = 
901, 915, 923, 923, x      mean = 917
x = 
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