什么是三日均线

中文版

三日均线，又称为三日移动平均线，是一种技术分析指标，用于分析股票、期货等金融产品的价格走势。三日均线表示过去三个交易日收盘价的平均值所构成的连续线条。这条线能够反映出短期内的价格趋势，为投资者提供买卖决策的参考依据。

三日均线的计算方法是：将最近三个交易日的收盘价相加，然后除以3，得到的结果即为三日均线的值。随着每个交易日的结束，新的收盘价会被纳入计算，而最旧的收盘价则会被剔除，从而得到新的三日均线值。

三日均线对于短期交易者而言具有重要意义。当股票价格位于三日均线上方时，意味着短期趋势向上，可能是一个买入信号；而当股票价格位于三日均线下方时，意味着短期趋势向下，可能是一个卖出信号。当然，仅仅依赖三日均线来做出决策是不够的，还需要结合其他技术指标和市场信息进行综合分析。

英文版

What Is the Three-Day Moving Average?

The three-day moving average, also known as the three-day MA, is a technical analysis indicator used to analyze the price trends of financial products such as stocks and futures. It represents a continuous line formed by the average of the closing prices of the past three trading days. This line can reflect short-term price trends and provide investors with a reference for buying and selling decisions.

To calculate the three-day moving average, you add up the closing prices of the most recent three trading days and divide the sum by 3. The result is the value of the three-day moving average. As each trading day ends, the new closing price is included in the calculation, while the oldest closing price is excluded, resulting in a new three-day moving average value.

The three-day moving average is particularly significant for short-term traders. When a stock price is above the three-day moving average, it suggests an upward short-term trend, potentially indicating a buy signal. Conversely, when the stock price is below the three-day moving average, it suggests a downward short-term trend, potentially indicating a sell signal. However, relying solely on the three-day moving average to make decisions is insufficient. It is crucial to combine it with other technical indicators and market information for a comprehensive analysis.