what is the standard deviation?

An inveator purchases a share of Synovous Benk stock this morring for $2.80. The imestot beleves the economy Will take one of three conditions in the coming yeas, and each condion wil hwe an impact on the seling prise of the atock The investcr's belets about the econorvy are shown beliow: What is the standard dwiation for Syrevcus neturns fosed on the investoris returnai? Answer format: Porcentage found ta-2 decinw places Eismpla: 924%, 5 sign mquied. Wa accept decimat format rounded to 4 decimal places fex: 0.0924