In this task you are given a list of numbers and you need to find the average of each two consecutive values. The average of two numbers a and b is calculated as: (a + b) /2. The output should be a list of the averages of each two consecutive values. A list is presented with two brackets and comma-separated values, like: [1,2,3].
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Question: [1, 77, 55, -37, -65, 80, 31, -37, -61, 3, -80]

Answer: [39.0, 66.0, 9.0, -51.0, 7.5, 55.5, -3.0, -49.0, -29.0, -38.5]


Question: [6, 12, 68, 37, 39, 100, -48]

Answer: [9.0, 40.0, 52.5, 38.0, 69.5, 26.0]


Question: [10, 17]

Answer:
[13.5]