tal = [1,2,3,4,6,7,8,9]


def summera(tal)
  a=0
  for ental in tal
  a += ental
  end
  puts "Summan är " + a.to_s
end

  puts summera(tal)
  
def summa(tal)
  a=0
  for ental in tal
  a += ental
  end
  puts a
end

  puts summa(tal)


def medel(tal)
  a = summa(tal)
  b = tal.size
  puts a / b
end

puts medel(tal)

def median(tal)
  sorted = tal.sort
  mid = tal.size/2
  sorted[mid]
end

puts median(tal)