1 개요[ | ]
- AVERAGE()
- avg
- mean()
- array_mean()
- array_average()
- 산술평균을 구하는 함수
2 C[ | ]
C언어 array_mean() 문서를 참고하십시오.
C
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#include<stdio.h>
float intArray_mean(int arr[], int len) {
float sum = 0;
for(int i=0; i<len; i++) sum += arr[i];
return sum / len;
}
void main() {
int nums[] = {1,2,3,4};
int len = sizeof(nums)/sizeof(nums[0]);
printf("mean = %f", intArray_mean(nums,len));
// mean = 2.500000
}
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3 Excel[ | ]
PHP
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=AVERAGE(1,2,3,4,5)
// 3
4 Java[ | ]
Java average() 문서를 참고하십시오.
Java
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int[] nums = {1,2,7};
double avg = Arrays.stream(nums).average().getAsDouble(); // 3.3333333333333335
Java
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import java.util.Arrays;
public class Main {
public static void main(String args[]) {
int[] nums = {1,2,7};
double avg = Arrays.stream(nums).average().getAsDouble();
System.out.println(avg); // 3.3333333333333335
}
}
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5 PHP[ | ]
PHP average() 문서를 참고하십시오.
PHP
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$nums = [1, 2, 3, 4, 5];
var_dump( array_sum($nums)/count($nums) ); # int(3)
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PHP
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$nums = [1, 2, 3, 4];
var_dump( array_sum($nums)/count($nums) ); # float(2.5)
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6 Python[ | ]
파이썬 average() 문서를 참고하십시오.Python 3
Python
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nums = [1, 2, 3, 4]
print( sum(nums)/len(nums) ) # 2.5
nums = [1, 2, 3, 4, 5]
print( sum(nums)/len(nums) ) # 3.0
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Python 2
Python
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nums = [1, 2, 3, 4]
print( sum(nums)/len(nums) )
# 2
nums = [1, 2, 3, 4, 5]
print( sum(nums)/len(nums) )
# 3
nums = [1, 2, 3, 4]
print( 1.0*sum(nums)/len(nums) )
# 2.5
nums = [1, 2, 3, 4, 5]
print( 1.0*sum(nums)/len(nums) )
# 3.0
NumPy mean() 문서를 참고하십시오.NumPy
Python
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import numpy as np
a = np.array([1,2,3,4])
print( a.mean() ) # 2.5
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7 Perl[ | ]
펄 average() 문서를 참고하십시오.모듈 사용
Perl
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use Math::NumberCruncher;
my @array = (1, 2, 3, 4, 5);
print Math::NumberCruncher::Mean(\@array);
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모듈 미사용
Perl
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sub average {
my @array = @_;
my $sum;
foreach (@array) { $sum += $_; }
return $sum/@array;
}
my @dataArray = (1, 2, 3, 4, 5);
print average(@dataArray);
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8 R[ | ]
R mean() 문서를 참고하십시오.
R
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x <- c(1,2,3,4,5)
print( mean(x) ) # 3
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