Recall that ds shows the weights of a sample of slabs from a certain company, manufacturer A. In addition, ds shows the weights of a sample of paving slabs from another company, manufacturer B. What is the purpose of ds in this context?
1) To compare the weights of slabs from manufacturer A and manufacturer B
2) To calculate the average weight of slabs from manufacturer A
3) To determine the weight distribution of slabs from manufacturer B
4) To analyze the correlation between the weights of slabs from manufacturer A and manufacturer B