How to Compute the Sum and Average of Elements in an Array

How to compute the sum and average of elements in an array?

var sum = 0;
for( var i = 0; i < elmt.length; i++ ){
    sum += parseInt( elmt[i], 10 ); //don't forget to add the base
}

var avg = sum/elmt.length;

document.write( "The sum of all the elements is: " + sum + " The average is: " + avg );

Just iterate through the array, since your values are strings, they have to be converted to an integer first. And average is just the sum of values divided by the number of values.

Finding the average of an array using JS

You calculate an average by adding all the elements and then dividing by the number of elements.

var total = 0;
for(var i = 0; i < grades.length; i++) {
    total += grades[i];
}
var avg = total / grades.length;

The reason you got 68 as your result is because in your loop, you keep overwriting your average, so the final value will be the result of your last calculation. And your division and multiplication by grades.length cancel each other out.

Sum and average of values in an array

At first you have to take an array of numbers. Iterate all the numbers in the array and add the numbers to a variable. Thus after iteration you will get the sum of the numbers. Now divide the sum by count of numbers (which means the size of array). Thus you will get the average.

int[] numbers = {10, 20, 15, 56, 22};
double average;
int sum = 0;

for (int number : numbers) {
    sum += number;
}

average = sum / (1.0 * numbers.length);
System.out.println("Average = " + average);

You can also iterate in this way:

for (int i = 0; i < numbers.length; i++) {
    sum += numbers[i];
}

Sum and average of multiple object elements inside an array in python

Generate a list of the desired entities from the list given (I suppose it is named some_list, as you do not provide a name):

population_list = [d['Population'] for d in some_list]

You can calulate the total population by simply summing the list:

total_population = sum(population_list)

For calculation of average so many possible solution exist, that it is almost impossible to name all of them. On possiblity might be mean() from the statistics package

Calculating sum and average of an array with user input and functions in c

There is no need of for loop while calling addNumbers() and avgNumbers(). Also you are sending the address in place of value in method. Replace your code with this code.

sum = 0;
sum = addNumbers(number);
average = avgNumbers(sum,n);

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