2021年CFA考试《Level Ⅰ》考试题库-CFA考试（Level Ⅰ）-Study Session 3 Quantitative Methods Application-
财会经济-CFA特许金融分析师
单选题-An analyst who uses the standard deviation of recent prices to identify overbought or oversold conditions is most likelyto employ:
单选题
A.Bollinger bands
B.A Relative Strength Index
C.A rate of change oscillator
我个人认为这个应该是：A
解析：Bollinget bands are based on the standard deviation of prices over some number of the most recent periods. An RSI is based on the sums of positive and negative price changes during a period. An ROC oscillator is based on the difference between the most recent closing price and the closing price a given number of periods earlier.
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