Here we're going to say that the average bond order is just the average number of chemical bonds between a pair of elements. Now a single bond has a bond order of 1, a double bond has a bond order of 2. So what triple bond would have a bond order of 3?

Now remember, as the average bond order increases, that means the strength of the bond will increase and the length of the bond will decrease. So we'd say average bond order and bond strength are directly proportional. Both increase together and they are inversely proportional to bond length, which decreases as they increase.