The price per share of stock for a sample of 25 companies was recorded at the beginning of 2012and then again at the end of the 1st quarter of 2012 (the wall street Journal, April 2, 2012).How stocks perform during the 1st quarter is an indicator of what is ahead for the stock marketand the economy. Use the sample data in the file entitled StockPrices to answer the following.a. Let didenote the change in price per share for company i where di = 1st quarter of 2012price per share minus the beginning of 2012 price per share. Use the sample mean of thesevalues to estimate the dollar amount a share of stock has changed during the 1st quarter

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.