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: [43, -57]

Answer: [-7.0]


Question: [-91, -56, -90, -31, -60, 42, -68, 49, -16, -11, 62, 27, -76, -24]

Answer:
[-73.5, -73.0, -60.5, -45.5, -9.0, -13.0, -9.5, 16.5, -13.5, 25.5, 44.5, -24.5, -50.0]