菜鸟用spss 16.0做主成分分析，结果分析不出来还有一条警告
Warnings
There are fewer than two cases, at least one of the variables has zero variance, there is only one variable in the analysis, or correlation coefficients could not be computed for all pairs of variables. No further statistics will be computed.
请问大侠这个问题是怎么回事呢，数据是不合适做这个分析还是软件应用的问题？急求各位大侠出手相助