Systems Check

list_statistics.rb

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

def avg(array)
  total = 0
  array.each do |grade|
    total += grade
  end
  avg = total / array.length
  avg
end

puts avg(scores)


def min(array)
  min = array[0]
  array.each do |grade|
    if grade < min
      min = grade
    end
  end
  min
end

puts min(scores)


def max(array)
  max = array[-1]
  array.each do |grade|
    if grade > max
      max = grade
    end
  end
  max
end

puts max(scores)

Also, in case it's helpful, here's the criteria we use in "grading" these things. The ones towards the bottom will apply to all systems checks:

average method has correct signature
average method calculates average
average method converts to float (OPTIONAL)
average method handles empty list (OPTIONAL)
average method does not modify array
max method has correct signature
max method calculates max
max method does not modify array
max method does not sort the array
max method does not use the Array#max method
min method has correct signature
min method calculates min
min method does not modify array
min method does not sort the array
min method does not use the Array#min method

Proper indentation (2 spaces, no tabs).
Methods and variables have clear, meaningful names.
Method and variable names use underscores, class and module names use camel-case.
No global or instance variables.
Newline included at end of file.
No consecutive (2+) blank lines.
No unnecessary "puts" or "binding.pry" statements

Late for standup without notifying mentor.
Missed standup without notifying mentor.
Absent without notifying mentor.