丈量次数为4次,每次丈量结果为:89.027m、89.034m、89.025m和89.030m,试求算术平均值中误差。()A、±2.0mmB、±3.0mmC、±3.5mmD、±4.0mm
丈量次数为4次,每次丈量结果为:89.027m、89.034m、89.025m和89.030m,试求算术平均值中误差。()
A、±2.0mm
B、±3.0mm
C、±3.5mm
D、±4.0mm
相关考题:
某边AB丈量四次,其值为:60.312,60.311,60.315,60.314(m),CD丈量六次,其值为100.816,100.818,100.819,100.817,100.814,100.818(m)。试分别计算AB和CD的测量中误差,并用中误差比较AB与CD的丈量精度。