There are five methods you can use to look up number values in excel. These include SUMPRODUCT, SUMIF, AGGREGATE, LOOKUP and a combination of INDEX & MATCH.
Most of the time when we are stuck with lookup and return something process, we revert to VLOOKUP() and occasionally HLOOKUP(), according to the situation
When we are developing a model or trying to test some formula, we need data and when we don’t have one, we have to create it to suit our needs. This is frequently called dummy data.