how to calculate factor for regression how do factorized regressions work how to perform lm in r how to find the factor for a plant in r when to use variables in r how do you calculate factor uptake in r how to find factors in r equation what does lm mean in r how to calculate factors in r what factors does r use r how to calculate initial uptake levels from the treatment how to calculate variable uptake in r how does lm work how many factors does r use how to do the linear regression in r how is lm calculated lm (uptake  type  treatment ] = CO2) what is lm coefficient in r lm(uptake  type + treatment _________) is a function of what is the coefficient in r of uptake from a plant