某化肥生产商需要检验三种新产品的效果，在同一地区选取3块同样大小的农田进行试验，甲农田中使用甲化肥，在乙农田使用乙化肥，在丙地使用丙化肥，得到6次试验的结果如表1所示，试在0.05的显著性水平下分析甲乙丙化肥的肥效是否存在差异。
表1 三块农田的产量
甲 | 50 | 46 | 49 | 52 | 48 | 48 |
乙 | 49 | 50 | 47 | 47 | 46 | 49 |
丙 | 51 | 50 | 49 | 46 | 50 | 50 |
SPSS计算步骤
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.73&md5sum=aae3aefc9ce56daf21e76d5239bf0999&sign=ee7a90fc6a&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=52&ipr={"t":"img","r":"r_4","w":"553.73","h":"311.33","dataType":"png","c":"word/media/image1.png","imgOriW":1366,"imgOriH":768})
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.73&md5sum=aae3aefc9ce56daf21e76d5239bf0999&sign=ee7a90fc6a&rtcs_flag=2&rtcs_ver=3.1&l=webapp&bucketNum=52&ipr={"t":"img","r":"r_4","w":"553.73","h":"311.33","dataType":"png","c":"word/media/image2.png","imgOriW":1366,"imgOriH":768})
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