HP 12c Solutions Handbook page 80

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