HP 300s Scientific Calculator - Manual (Page 60)

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   
       
       
       
       
 

  (STAT)  (Sum)
 ( ) 
  (STAT)  (Var)
 ( ) 
  (STAT)  (MinMax)
 (Max Y) 
  (STAT)  (Reg)
 (A) 
xy 
x σ
n