Hi, I am working with two groups; high intangible and low intangible firms. My objective is to find the absolute error difference between the two groups for 4 valuation models so I can regress this difference against intangible assets to know if intangible assets explain the difference between the two groups. The issue is each time I try to find the difference, the values of the low intangible group become missing. Please how do I overcome this?
I used the code:
gen diff = model_high - Model_low