What percentage of women do not have applications installed on their mobile with respect to men?
percentage = MULTIPLY(DIVIDE(SUM(gender = 'F'), SUM(gender = 'M')), 1.0); women refers to gender = 'F'; not installed refers to is_installed = 0; men refers to gender = 'M';
SELECT SUM(IIF(T1.gender = 'F', 1, 0)) / SUM(IIF(T1.gender = 'M', 1, 0)) AS per FROM gender_age AS T1 INNER JOIN events_relevant AS T2 ON T1.device_id = T2.device_id INNER JOIN app_events_relevant AS T3 ON T2.event_id = T3.event_id WHERE T3.is_installed = 0