Fixed NMED calculations

cme433_lrtestbench-main/python/get_mnist_stats.py

cme433_lrtestbench-main/results/multexact_0in_layer0_out.txt

cme433_lrtestbench-main/results/multexact_0in_layer1_out.txt

cme433_lrtestbench-main/results/multexact_0in_layer2_out.txt

...33_lrtestbench-main/results/multexact_10in_layer0_out.txt

...33_lrtestbench-main/results/multexact_10in_layer1_out.txt

...33_lrtestbench-main/results/multexact_10in_layer2_out.txt

...33_lrtestbench-main/results/multexact_11in_layer0_out.txt

...33_lrtestbench-main/results/multexact_11in_layer1_out.txt

...33_lrtestbench-main/results/multexact_11in_layer2_out.txt

...33_lrtestbench-main/results/multexact_12in_layer0_out.txt

...33_lrtestbench-main/results/multexact_12in_layer1_out.txt

...33_lrtestbench-main/results/multexact_12in_layer2_out.txt

...33_lrtestbench-main/results/multexact_13in_layer0_out.txt

...33_lrtestbench-main/results/multexact_13in_layer1_out.txt

...33_lrtestbench-main/results/multexact_13in_layer2_out.txt

...33_lrtestbench-main/results/multexact_14in_layer0_out.txt

...33_lrtestbench-main/results/multexact_14in_layer1_out.txt

...33_lrtestbench-main/results/multexact_14in_layer2_out.txt

...33_lrtestbench-main/results/multexact_15in_layer0_out.txt