HP 49G User Manual page 268

PRVAR
PSDEV
Σ
1-268
Level 1/Argument 1
!
ƒ‚…‡
1
-- -
n
Level 1/Argument 1
→
→
→
n
2
∑
( )
x – x
k
k = 1
x
→
→
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Command Reference: Part C, G-P (1.1)
Level 1/Item 1
Level 1/Item 1
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