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: [-30, 37, -83, -63, 52, 22, 80, 75, -98, -17]

Answer: [3.5, -23.0, -73.0, -5.5, 37.0, 51.0, 77.5, -11.5, -57.5]


Question: [6, -20, 92, 43, -89, 46, 1, -64, -71, 88]

Answer: [-7.0, 36.0, 67.5, -23.0, -21.5, 23.5, -31.5, -67.5, 8.5]


Question: [87, -80, -50]

Answer:
[3.5, -65.0]