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Four research groups studying neural firing rates all report identical results

Four research groups studying neural firing rates all report identical results: Mean = 45 Hz, SD = +/-17 Hz

Based on these bar graphs, do these groups have the same results?

Research Group A

Mean = 45 Hz
SD = +/-17 Hz

Research Group A bar chart

Research Group B

Mean = 45 Hz
SD = +/-17 Hz

Research Group B bar chart

Research Group C

Mean = 45 Hz
SD = +/-17 Hz

Research Group C bar chart

Research Group D

Mean = 45 Hz
SD = +/-17 Hz

Research Group D bar chart