NPR transcripts are created on a rush deadline by Verb8tm, Inc., an NPR contractor, and produced using a proprietary transcription process developed with NPR. This text may not be in its final form and may be updated or revised in the future. Accuracy and availability may vary. The authoritative record of NPR’s programming is the audio record. Read & Listen Home News Arts & Life Music Podcasts Programs Connect Newsletters Facebook Twitter Instagram Press Contact & Help About NPR Overview Diversity Ethics Finances Public Editor Corrections Get Involved Support Public Radio Sponsor NPR NPR Careers NPR Shop NPR Events NPR Extra Terms of Use Privacy Your Privacy Choices Text Only ECONOMY United States The Americas Britain Asia India Special Report: How to Lead the Changing Japan China Europe Middle East & Africa FINANCE & BANKING Banking Innovation Global Capital Markets Financial Management Cryptocurrencies Regulation & Compliance Personal Finance Responsible Finance Legal Services EMERGING
Is the Subject Area "Sine waves" applicable to this article? Yes No Publications PLOS Biology PLOS Medicine PLOS Computational Biology PLOS Genetics PLOS Pathogens PLOS ONE PLOS Neglected Tropical Diseases PLOS Climate PLOS Digital Health PLOS Global Public Health PLOS Sustainability and Transformation PLOS Water Home Blogs Collections Give feedback LOCKSS PLOS is a nonprofit 501(c)(3) corporation, #C2354500, based in San Francisco, California, US

With IG, you can trade cryptocurrencies via a CFD account – derivative products that enable you speculate on whether your chosen cryptocurrency will rise or fall in value. Prices are quoted in traditional currencies such as the US dollar, and you never take ownership of the cryptocurrency itself.
In order to provide a methodology to detect bubbles in time series, Phillips, Wu, and Yu [23] proposed the supremum augmented Dickey-Fuller (SADF) test. This applies a series of right-tailed unit root tests to expanding windows of a time series (with a fixed start date), defined by where r2 is the final data point to be considered in each window, starting at r0 which is a fraction representing the smallest allowed window size and expanding to 1(the complete data set).