A Study on the Influencing Factors to Food Price Based on Principal Component Analysis

By establishing the evaluation index system of the affecting factors to food prices, and using the principal component analysis to study the affecting factors to food prices in the year 2001-2009, three principal components are obtained. According to the principal components, the paper calculated and sorted composite score for each year's food prices, and found that food price shows a change in the form of wavy line in the nine years.