Selection Bias

Beware of Selection Bias

Beware of Selection Bias

Lets travel back in time to World War II. You are an analyst and you discovered that your aircrafts has low survival rate. Only 10% of the aircrafts made it back from missions. You examined the aircrafts and discovered that the enemy has good marksmen and all the shots landed in the cockpit. 90% of the bullet holes are on the left cockpit. 10% are on the right cockpit. You can only armor plate one side of the aircraft due to weight constrain. Which side would you armor plate?