The follow ing table shows a portion o f the grow th rate in the gross domestic product (GDP) for China from 1980 through 2008; the full data set is on the text website, labeled China GDP. Use the m ethod o f runs above and below the median w ith a significance level o f 5% to test the null hypothesis o f randomness against the alternative th a t there is a trend or cyclical pattern.

Year GDP 1980 7.8 1981 5.2

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2008 9.0 Source: h t tp : //d a ta .w o r ld b a n k .o r g / in d ic a to r .