The abnormal return in an event study is described as the Multiple Choice Ototal retum eamed on a securty for the 7 day period commenceng 3 day pnor to an announcement ffecingthat securty total return earned on a security for the 7- day period commencing 3 days prior to an announcement affecting that security actual return on a security minus the market rate of return on the same date total return earned by a security on the date of an announcement affecting that security any change in the market price of a security that exceeds 5 percent over a 7-day period change in market velue of a security on the day of an announcement affecting that security