用minitab计算非正态数据的Cpk时,Cpk数据显示为**,

用minitab计算非正态数据的Cpk时,Cpk数据显示为**,
数据如下：
4.8216
5.0184
4.8216
5.7072
5.1168
5.2152
5.2152
4.9200
5.3136
5.2152
5.0184
5.3136
4.9200
5.5104
5.1168
5.2152
5.5104
5.7072
5.2152
5.7072
5.4120
5.0184
5.3136
5.0184
5.0184
4.9200
5.0184
5.1168
5.4120
5.0184
5.7072
5.5104
5.4120
5.5104
5.2152
5.5104
5.0184
5.6088
5.0184
5.4120
5.4120
5.3136
4.8216
5.7072
5.3136
5.2152
5.3136
4.9200
5.5104
5.0184
5.1168
5.1168
5.0184
5.5104
5.5104
4.8216
5.3136
5.3136
5.7072
5.5104
5.1168
4.9200
5.2152
5.7072
6.1008
5.8056
5.4120
5.6088
5.6088
5.4120
5.2152
5.3136
5.1168
5.8056
5.4120
5.3136
5.2152
5.3136
5.0184
5.7072
5.6088
5.4120
5.3136
5.2152
5.2152
5.7072
5.4120
5.0184
5.7072
5.1168
5.2152
5.0184
5.0184
4.9200
5.0184
5.5104
5.0184
5.1168
5.0184
5.7072
5.5104
5.4120
5.5104
5.2152
5.5104
5.2152
4.9200
5.3136
5.2152
5.0184
5.3136
4.9200
5.5104
5.2152
4.9200
5.3136
5.2152
5.0184
5.3136
4.9200
5.5104
5.1168
5.0184
5.7072
5.5104
我选择了统计=》质量工具=》正态,规格（单边）及选择如下图

结果显示为