what is total sum of squares what is the total sum of sq in tss what is the total sum of squares what is tss total sum of squares in exponential regression total sum of squares vs linear regression total sum of squares exponential regression when to find tss total sum of a sql what is tss tss total sum of squares what is tss data what is the tss equation what is tss in math tss definition wikipedia what is total sum squares total sum of squares when do you need to find the sum of a square what is the total sum of squares total sum of squares exponentially