View Compilation Error

0_0_6342107_1448\Main.java:10: incompatible types
found   : java.lang.Double[]
required: java.lang.Double[][]
		Double[][] c_ave = new Double[m];
		                   ^
0_0_6342107_1448\Main.java:28: incompatible types
found   : double
required: java.lang.Double[]
                c_ave[i] = sum/n;
                              ^
0_0_6342107_1448\Main.java:34: operator < cannot be applied to int,java.lang.Double[]
                    if(score[i][j]<c_ave[j]){
                                  ^
3 errors