Different batch sizes give different test accuracies

[Annus_Zulfiqar]

and I asked a similar question sometime ago. but the problem was different back then.

Test accuracy with different batch sizes

this is a newby question I am asking here but for some reason, when I change the batch size at test time, the accuracy of my model changes. Decreasing the batch size reduces the accuracy until a batch size of 1 leads to 11% accuracy although the same model gives me 97% accuracy with a test batch size of 512 (I trained it with batch size 512). I am using a pretrained resnet 50 model and finetuning it on my own images and I am also using .train() and .eval() at train and test times properly. The b…