You have observed the following prices for British Auto, the luxury car maker, for a number of years. Jan 2006: €26.87; Jan 2007: €35.19; Jan 2008: €32.17; Jan 2009: €37.23; Jan 2010: €46.84; Jan 2011: €36.80; Jan 2012: €18.61; Jan 2013: €30.96; Jan 2014: €56.08; Jan 2015: €65.39. The company paid the following dividends: 2006: €0.52; 2007: €0.58; 2008: €0.62; 2009: €0.64; 2010: €0.70; 2011: Nil;

2012: €0.30; 2013: €0.30; 2014: Nil.

(a) What was the arithmetic average return on British Auto’s shares over this period?

(b) What was the variance of British Auto’s returns over this period? The standard deviation?