The calculation method for standardized type-token ratio ( TTR ) is as follows:
Calculate the TTR of every 1000 words in each text,and average the various TTRs obtained to get the mean value.(Take a three-thousand-word text for example,if the TTR of the first 1000 words is 50,the second is 52 and the third 54,then just average the three numbers)
注：您举的例子有矛盾,为了上下文一致,我已将五千字改为三千字.
【英语牛人团】