TASK DEFINITION: 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].
PROBLEM: [31, 33, 27, 25]

SOLUTION: [32.0, 30.0, 26.0]

PROBLEM: [7, -23]

SOLUTION: [-8.0]

PROBLEM: [-12, 46, -34, -62, 88, 15]

SOLUTION:
[17.0, 6.0, -48.0, 13.0, 51.5]