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Statistics (Standard Deviation) Practice 1
Statistics (Standard Deviation) Practice 1

1.
 
 
 
2.
 
 (a)
 
 x  12  14  16  18  20
 Frequency  2  3  5  4  1
  (b)
 
           
 Frequency  4  9  12  9  6
 (c)
 
 x  0 - 4  5 - 9  10 - 14  15 - 19
 Frequency  10  8  6  6