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: [48, 53, -97, -84, -73, -86, -82, -30, 39, 51, 3, -69, 11, -15, -38]
A: 
[50.5, -22.0, -90.5, -78.5, -79.5, -84.0, -56.0, 4.5, 45.0, 27.0, -33.0, -29.0, -2.0, -26.5]