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log of market cap?

Why do we usually take the logarithm of the market cap in reading 12? For example, look at P306. Why not just take the market cap

it is exponential growth that you are adjusting for.

100->1000 is 10 times increase

plot

100, 1000, 10000

for different time periods
graph looks like upward portion of U

but plot
ln (100), ln(1000), ln(10000)

it is closer to a straight line.

CP

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