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: [17, -31, 89, -43, 58, -50, 2, -61]

Answer: [-7.0, 29.0, 23.0, 7.5, 4.0, -24.0, -29.5]


Question: [58, 76, 12, -55, 74, 15, -81]

Answer: [67.0, 44.0, -21.5, 9.5, 44.5, -33.0]


Question: [-6, 85, 98]

Answer:
[39.5, 91.5]