求翻译：攻击行为和偏差行为的发生率都较低，男生比女生表现出更多的偏差行为，偏差行为的年级差异显著，年级越高不良行为的发生率越高。是什么意思？

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An attacker behavior and deviant behavior of the rate of occurrence is relatively low, boys are more likely than girls showed more deviant behavior, deviant behavior in first grade vary significantly, and the more junior high behavior of the rate of occurrence is high.

The attack behavior and the deviation behavior formation rate is all low, the male student displays the more deviation behavior compared to the female student, the deviation behavior grade difference is remarkable, the grade higher misdeed formation rate is higher.

Aggressive behavior and low rate of deviant behavior, men are better than women showed more deviant behavior, deviant behavior grade difference, the higher the grade, the higher the incidence of bad behavior.

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