Ross Company; Westerfield, Incorporated; and Jordan Company announced a new agreement to market their respective products in China on July $18,$ February $12,$ and October $7,$ respectively. Given the information below, calculate the cumulative abnormal return $($CAR$)$ for these stocks as a group. Assume all companies have an expected return equal to the market return.

Note: A negative value should be indicated by a minus sign. Leave no cells blank $-$ be certain to enter $"0"$ wherever required. Do not round intermediate calculations. Round your answers to $1$ decimal place.

Ross Company Westerfield, Incorporated Jordan Company

Date Market Return Company Return Date Market Return Company Return Date Market Return Company Return

July $120\mathrm{.}20\mathrm{.}8$ February $80\mathrm{.}20\mathrm{.}8$ October $11\mathrm{.}80\mathrm{.}6$

July $131\mathrm{.}60\mathrm{.}3$ February $90\mathrm{.}30\mathrm{.}8$ October $21\mathrm{.}70\mathrm{.}6$

July $160\mathrm{.}00\mathrm{.}5$ February $100\mathrm{.}50\mathrm{.}6$ October $30\mathrm{.}81\mathrm{.}3$

July $170\mathrm{.}60\mathrm{.}2$ February $110\mathrm{.}72\mathrm{.}5$ October $60\mathrm{.}10\mathrm{.}3$

July $180\mathrm{.}41\mathrm{.}3$ February $120\mathrm{.}10\mathrm{.}1$ October $71\mathrm{.}80\mathrm{.}3$

July $192\mathrm{.}30\mathrm{.}3$ February $151\mathrm{.}51\mathrm{.}7$ October $81\mathrm{.}50\mathrm{.}6$

July $200\mathrm{.}91\mathrm{.}6$ February $160\mathrm{.}70\mathrm{.}1$ October $90\mathrm{.}51\mathrm{.}0$

July $230\mathrm{.}60\mathrm{.}4$ February $170\mathrm{.}10\mathrm{.}0$ October $100\mathrm{.}10\mathrm{.}1$

July $241\mathrm{.}60\mathrm{.}0$ February $182\mathrm{.}00\mathrm{.}4$ October $130\mathrm{.}20\mathrm{.}6$