the pulse rate ( per minute) of 20 persons was recorded as .
61, 76 , 71 , 66 , 78 , 60 , 68 , 63 , 72 , 75 , 68 , 75 , 62 , 71 , 73 , 79 , 74 , 71 , 64 , 71 .
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what do u want? average?
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