1、打开Excel表格,在表格中输入“磷含量”和“吸光度”。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/9c16fdfaaf51f3de27d563339beef01f3a297906?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、选择全部内容,点击“插入”,选择“XY 散点图”。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/9e3df8dcd100baa10b4b9dec4810b912c8fc2e06?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、然后选择“散点图第一个格式,最后点击“下一步”;源数据直接选择下一步即可。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/0dd7912397dda144c35db6e5bdb7d0a20cf48615?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、在图片选项中的“数值(X)轴”和“数值(Y)轴”中分别输入“磷含量”和“吸光度”,(也可不用输入),在图片标题中输入“磷的曲线方程”,最后点击“完成”即可。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/dbb44aed2e738bd4a0476866ae8b87d6277ff907?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5、选择图点击“右键”,在“添加趋势线”中点击“选择”。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/9825bc315c6034a8c13663d6c413495408237695?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
6、然后勾选“显示公式”和“显示R的平方值”,最后点击“确定”。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/c8177f3e6709c93db094d4a0903df8dcd1005407?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
7、最后点击保存,曲线方程便完成了。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d833c895d143ad4b3f489c978d025aafa40f0607?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)