总碱度测定值(以CaCO3计,单位mg/L) | |||||
216.7 | 155.49 | 126 | 117.72 | 105.6 | 99 |
205.71 | 153.6 | 125.54 | 115.9 | 105.21 | 98.5 |
204.8 | 153.6 | 124.65 | 114.52 | 105.1 | 98.5 |
199.81 | 150.2 | 124.58 | 113.87 | 104.44 | 97.97 |
185.79 | 147.2 | 121.72 | 109.19 | 102.61 | 97.15 |
182.29 | 146.25 | 121.3 | 107.91 | 102.36 | 96.62 |
176.1 | 136.4 | 120.6 | 107.8 | 101.88 | 75.21 |
175 | 131.31 | 118.8 | 107.4 | 101.67 | 70.63 |
171 | 128.45 | 118 | 107.11 | 100.63 | 51.38 |
164.53 | 127.31 | 117.83 | 106.7 | 99.47 |
|
测量次数 | 59 | ||||
平均值 | 126.32 | ||||
标准偏差s | 34.60 | ||||
相对标准偏差 | 27.39 | ||||
不确定度U (置信度95%) | 8.83 | ||||
测量值 | 126 ± 9 |