모든 변인에서 왜도는 절댓값 2 이하, 첨도는 절댓값 4 이하로 나타나 정상 분포 조건을 만족하였다.
In all variables, the skewness was shown to be the absolute value 2 or less and the kurtosis was shown to be the absolute value 4 or less, satisfying the normal distribution condition.