题目

The role of a newspaper is to present and comment on the news. It is vital for keeping people well-informed on current affairs. In most Western countries, journalists try to shape the ideas and opinions of their readers, since in Western countries all newspapers are independent of the government. Some newspaper owners support liberal ideas including economic policies that help poor people. Other owners want policies such as lower taxes for rich people and less money to be given to poor people. You can almost judge the political ideas of a person in the West by looking at the newspaper 数据8，-4，3，-1，3，-3，-2，0，5，1的平均数是________．