repeat regression to access betas and T test results

hi,Im quite new with Matlab and currently work on a project, which requires me to run two kinds of regressions 100 times for 100 companies. The time frame is 20 years and its in monthly basis(100 (row)*240(column) data). Two regressions are: "y=a+ b x" and "y=a+ b x+ c x^2" and the size of this independent variable: x is 1*240. What I need is both coefficient b from the first regression and coefficient c from the second regression , and their t-stat results . Can I ask how I can write this code in matlab? Many thanks.

Answer 1

[the cyclist]

If you have access to the Statistics and Machine Learning Toolbox, then I recommend using the fitlm command.

[Mandy Guo]

hi,I understand I can use fitlm function. However, I just feel quite confused about how to loop these coefficients and t test results in another variable because fitlm function actually returns me 100 tables.