Instructions: 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].
Input: [67, -84, 42, -64, -18, 19, 28]
Output:
[-8.5, -21.0, -11.0, -41.0, 0.5, 23.5]