HP 12C Solutions Handbook

79
Now average each quarter's seasonal variation for the two years?
390
449.75 4th quarter, 1978.
111.40
530
460.25 1st quarter, 1979.
98.86
560
476.38 2nd quarter, 1979.
81.87
513
490.00 3rd quarter, 1979.
107.94
434
503.75 4th quarter, 1979.
111.17
562
513.25 1st quarter, 1979.
99.95
593
521.38 2nd quarter, 1980.
83.24
Keystrokes Display
CLEAR
0.00
98.86
1.00
99.95
2.00
99.41
1st quarter average seasonal
variation, %.
CLEAR
0.00
81.87
1.00
83.24
2.00
82.56
2nd quarter average seasonal
variation, %.
CLEAR
0.00
104.37
1.00
107.94
2.00
106.16
3rd quarter average seasonal
variation, %.

HP 12C Specifications

General

Type	Financial Calculator
Display	LCD, 10 digits
Manufacturer	Hewlett-Packard
Programming	Keystroke
Memory	20 memory registers
Functions	statistical functions
Dimensions	12.7 x 7.87 x 1.52 cm (5 x 3.1 x 0.6 in)