Here i have provided the code to reproduce the weight distribution analysis given in the paper Data Free Quantization (DFQ) by Qualcomm https://arxiv.org/pdf/1906.04721.pdf
python weight_distribution_analysis.py
To understand what is batch norm folding please see following post https://towardsdatascience.com/speed-up-inference-with-batch-normalization-folding-8a45a83a89d8