Data with Data Repeat:
[[79.3  79.84]
 [80.56 79.8 ]
 [83.44 82.08]
 [84.08 83.6 ]]
Mean: [79.57 80.18 82.76 83.84]
Std Deviation: [0.27 0.38 0.68 0.24]

Data without Data Repeat:
[[79.3  79.84]
 [79.8  80.2 ]
 [80.52 79.36]
 [77.92 80.1 ]]
Mean: [79.57 80.   79.94 79.01]
Std Deviation: [0.27 0.2  0.58 1.09]