Name some of the important or frequently used methods of Analysis in your company. Which of these do you prefer to use?

thanks for the invite, there are many analysing methods depends on many elements like the business itself and the product/service and the type of the data you have so it's complex and general questions please be more specific next time, here is a simple example always retailers use ATV or ( average tick value analysis) to identify best price for a promotion

Thanks Mohammed, let me clarify: What are the types of reports used for the following businesses/functions? Customer service - telecom industry Banking Manufacturing Transportation - based on driver/car/fare information Request your inputs on the above.

Thank you for the invitation, and thank you Mohammed for the perfect clarification, as it totally depends on type of business, service, or product.
However, another example is when we want to assess the impact of a training skills program (before and after the training); we can use the difference in difference DID technique.
It measure the change induced by a particular training (or treatment).