Find the mean of negative and positive integers

Match it! Select the correct answer from the pull down...Good luck!

Find the mean: -376, -634, 235, 259

Find the mean of these numbers -5, 4, 6, -5, 5, -17

Find the mean of -36, -60, -12, 54, -18, -30

Find the mean: -12, -13, 26, -52, 26, 7, -23, 9

Find the mean -18, 24, 36, -48, 60, -42

Find the mean: -150, 250, -340, -230, -265

Find the mean of this set 14, -28, 63, -49, -42, -56, -14

Find the mean -36, -48, 52, 64, 78, -50