Radio Shack TRS-80 PC-3 Owner's Manual page 246

KEY OPERATION SEQUENCE
Step No. Key Input Display Remarks
1
@CID
TOTAL SUM = 1072.5 Display of total sum
2 (ENTER) MEAN VALUE = 14.3 Display of average
3
(ENTER)
VARIANCE = 1.432432432IE-02 Display of variance
4
(ENTER)
STD.DEV.= Display of standard deviation
5
(ENTER)
1.196842693IE-01
6
(ENTER)
>
Processing finished
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