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# Fourier Analysis of WLL (Whiting Petroleum Corporation)

WLL (Whiting Petroleum Corporation) appears to have interesting cyclic behaviour every 4 weeks (1.1696*sine), 3 weeks (1.0176*sine), and 4 weeks (1.0174*cosine).

WLL (Whiting Petroleum Corporation) has an average price of 32.07 (topmost row, frequency = 0).

Click on the checkboxes shown on the right to see how the various frequencies contribute to the graph. Look for large magnitude coefficients (sine or cosine), as these are associated with frequencies which contribute most to the associated stock plot. If you find a large magnitude coefficient which dramatically changes the graph, look at the associated "Period" in weeks, as you may have found a significant recurring cycle for the stock of interest.

## Fourier Analysis

Using data from 9/2/2020 to 7/26/2021 for WLL (Whiting Petroleum Corporation), this program was able to calculate the following Fourier Series:
Sequence #Cosine Coefficients Sine Coefficients FrequenciesPeriod
032.06708   0
12.03605 -13.76998 (1*2π)/4848 weeks
2-.10136 -7.3561 (2*2π)/4824 weeks
3-1.02197 -5.18437 (3*2π)/4816 weeks
4-.97829 -.301 (4*2π)/4812 weeks
5-1.64728 -1.31789 (5*2π)/4810 weeks
6-.31419 -.36638 (6*2π)/488 weeks
7-.38771 -1.26722 (7*2π)/487 weeks
8.35104 -.55029 (8*2π)/486 weeks
9-.74611 -.34945 (9*2π)/485 weeks
10.22455 -.42005 (10*2π)/485 weeks
11.20206 -.68611 (11*2π)/484 weeks
12-.81208 -1.16958 (12*2π)/484 weeks
13-1.01735 -.1748 (13*2π)/484 weeks
14-.56732 -1.01761 (14*2π)/483 weeks
15-.44852 -.5031 (15*2π)/483 weeks
16-.88646 -.21759 (16*2π)/483 weeks
17-.9619 -.29069 (17*2π)/483 weeks
18-.48331 -.09972 (18*2π)/483 weeks
19-.33797 -.48525 (19*2π)/483 weeks
20-.44713 .44017 (20*2π)/482 weeks
21-.14673 -.01969 (21*2π)/482 weeks
22-.29337 .29812 (22*2π)/482 weeks
23-.42756 -.20145 (23*2π)/482 weeks
24-.14833   (24*2π)/482 weeks
25-.42756 .20145 (25*2π)/482 weeks
26-.29337 -.29812 (26*2π)/482 weeks
27-.14673 .01969 (27*2π)/482 weeks
28-.44713 -.44017 (28*2π)/482 weeks
29-.33797 .48525 (29*2π)/482 weeks
30-.48331 .09972 (30*2π)/482 weeks
31-.9619 .29069 (31*2π)/482 weeks
32-.88646 .21759 (32*2π)/482 weeks
33-.44852 .5031 (33*2π)/481 weeks
34-.56732 1.01761 (34*2π)/481 weeks
35-1.01735 .1748 (35*2π)/481 weeks
36-.81208 1.16958 (36*2π)/481 weeks
37.20206 .68611 (37*2π)/481 weeks
38.22455 .42005 (38*2π)/481 weeks
39-.74611 .34945 (39*2π)/481 weeks
40.35104 .55029 (40*2π)/481 weeks
41-.38771 1.26722 (41*2π)/481 weeks
42-.31419 .36638 (42*2π)/481 weeks
43-1.64728 1.31789 (43*2π)/481 weeks
44-.97829 .301 (44*2π)/481 weeks
45-1.02197 5.18437 (45*2π)/481 weeks
46-.10136 7.3561 (46*2π)/481 weeks