Thank you for your help.

. The annual returns for two firms are listed below. Please calculate the variance and standard deviation of returns for each firm. Also, please calculate the covariance and correlation of returns between these firms. Year Firm A Firm B 2010 -0.118 0.229 2011 -0.301 -0.047 2012 0.146 0.303 2013 0.477 0.695 2014 0.696 0.264 2015 0.262 0.368 2016 0.546 0.778 2017 0.627 0.050 2018 0.509 0.407 2019 -0.163 -0.486