task 5 project 6

task 5 i am not understanding what to do ...i am asking second time that please tell me in detail..i have done this as a correlation in screenshot but i am not able to find the correlations...i am using correl function but nothing i am getting..i cant attach each formula here as i am getting wrong answers in many of them ..please tell this task in detail ....also i am not able to make heat map for this