求问哪里错了。一直提示这样；Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 7 at teest.Xun.main(Xun.java:13)

package teest;

public class Xun {

public static void main(String[] args) {

// TODO Auto-generated method stub

   int [] nums={61,23,4,74,13,148,20};

   int max=nums[0];

   int min=nums[0];

   int sum=0;

   double avg=0;

   for(int i=0;i<=nums.length;i++){

    if(nums[i]>max){

    max=nums[i];

    }

    if(nums[i]<min){

    min=nums[i];

    }

    sum=sum+nums[i];

   }

   avg=sum/nums.length;

System.out.println("最大值："+max);

System.out.println("最小值："+min);

System.out.println("平均值："+avg);

}

}