HP (Hewlett-Packard) F2215AA#ABA Calculator User Manual


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Statistics Programs 16-19
This program allows you to input data, correct entries, and calculate the standard
deviation and weighted mean of the grouped data.
Program Listing:
Program Lines:
(In ALG mode)
Description
  Start grouped standard deviation program.
  Clears statistics registers (-27 through -32).

  Clears the count N.
Checksum and length: E5BC 13
  Input statistical data points.
  Stores data point in X.
  Stores data–point frequency in F.
 Enters increment for N.
 
  Recalls data–point frequency f
i
.
Checksum and length: 3387 19
  Accumulate summations.
 
  Stores index for register -27.
 
 
Updates in register -27.
 
 
 
  Stores index for register -28.
 
 
Updates in register -28.
 
  Stores index for register -30.
 
 
 
∑
i
f
ii
fx
∑
ii
fx
i
2
i
fx
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