Hi, I have a set of results for which I wish to carry out sensitivity analysis. I have already googled it and it always comes up with examples on Microsoft Excel but I dont want to use excel for the sensitivity analysis. So can someone explain to me what sensitivity and uncertainty analysis are? As I understand it, its introducing 'what-if' scenarios but I have already completed my experiment and have the results. The experimental results consist of hot water going into a radiator where the inlet and outlet temperatures are recorded giving delta temperature. Air passes through the radiator dissipating heat and the air temperature before and after passing through the radiator are measured. So I will be calculating the heat transfers. In this case should I introduce my own values just to show how the calculation of the heat transfer will change in case of a "what-if" scenario ? Thank you.