Week 1 Checkpoint

Calculating Average, Highest & Lowest

scores = [75, 100, 85, 65, 84, 87, 95]

def average(array)
  total = 0

  array.each {|i| total += i}
  total/array.length

end

def highest(array)

  first = array[0]
  array.each do |i|

    if i > first
      first = i
    end

  end
  return first

end

def lowest(array)
  first = array[0]
  array.each do |i|

    if i < first
      first = i
    end
  end
  return first

end

puts "Average Score: #{average(scores)}"
puts "Highest Score: #{highest(scores)}"
puts "Lowest Score: #{lowest(scores)}"

inside your def average method, you could extract the sum of an array into its own method:

def average(array)
  sum(array) / array.length
end

def sum(array)
  array.inject { |sum, x| sum + x } 
end

in your highest and lowest methods, replace i and first with more expressive variable names. first is misleading because it doesn't return the first element, it returns the min or max.

otherwise, great job!

The only thing I'd add is to convert to floats instead of integers so that you get more precise results