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: [-21, 92, -76, 59, 41, -99, -5, 35, 92, 66, -50]

Answer: [35.5, 8.0, -8.5, 50.0, -29.0, -52.0, 15.0, 63.5, 79.0, 8.0]


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: [-73, 41, 54, -8, -78, -58, -50, 38, 40, 16, 71]

Answer:
[-16.0, 47.5, 23.0, -43.0, -68.0, -54.0, -6.0, 39.0, 28.0, 43.5]