test_scores.rb

# report average, lowest, and highest scores
require 'pry'

def bubble_sort scores
	bubbled = scores

	outer = 0
	while outer < bubbled.length - 1
		inner = 0
		while inner < bubbled.length - 1
			if bubbled[inner] > bubbled[inner+1]
				bubbled[inner], bubbled[inner+1] = bubbled[inner+1], bubbled[inner]
			end
			inner += 1
		end
		outer += 1
	end

	bubbled
end

def get_average scores
	total = 0
	scores.each {|num| total += num }
	total / scores.length
end

# -------  Method Barrier

test_scores = [75, 100, 85, 65, 84, 87, 95]
sorted = bubble_sort(test_scores.dup)

print "  Test scores: "
puts test_scores.join(' ')
print "Sorted scores: "
puts sorted.join(' ')
print " Lowest score: "
puts sorted[0]
print "Highest score: "
puts sorted[-1]

print "Average score: "
puts get_average(sorted)

Nice work!

One formatting note: Setting your tab size in Sublime to 2 should avoid the big indents. (A tab size of 2 is standard for Ruby code.)

A few suggestions / notes:

1. I'd try to use variable names that clearly indicate what the variable is. Instead of outer and inner, I'd use outer_counter and inner_counter. (Good naming is one of the hardest things in coding, I've found -- definitely a learned skill.)
2. You might want to tinker with your average method to return a more precise average. (The actual average is 84.43-something.) To do that, you need to convert at least one of the numbers to a float. If you divide two integers, you unfortunately will get an integer, not a float:

2.0.0-p353 :001 > 3/2
 => 1
2.0.0-p353 :002 > 3.0/2
 => 1.5

1. If you wanted to refactor, you could try creating max and min methods without sorting. You could also create a method to output class statistics.

Good job!