as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
create a function to calculate the mean of an array.
user
function findmean(array) {
  let sum = 0;
  for (let i=0; i<array.length; i++) {
    sum += array[i];
  }
  return sum/array.length;
}
assistant