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].
Q: [-4, -73, -88, 98, 21, -27, 64, 17, 20, -82, -52, -46, 24, -69, -3]
A: 
[-38.5, -80.5, 5.0, 59.5, -3.0, 18.5, 40.5, 18.5, -31.0, -67.0, -49.0, -11.0, -22.5, -36.0]