To calculate your average trade price, add all purchase prices and divide by the number of trades. Use weighted average trade price calculation if share quantities vary per purchase. Weighted ...

Stock indexes like the S&P 500 and the Nasdaq Composite go up and down in value according to the weighted average price movements of their component companies. Investors look to stock indexes like ...

The consumer price index is a weighted average collection of the ... inflation over as short a period as a single month. How to Calculate Inflation Using the CPI To calculate an estimated rate ...

Most stock market indexes are weighted by market capitalization ... helps investors compare current price levels with past prices to calculate market performance. The S&P 500 (also known as ...