Array:   [3, 5, 2, 8, 1, 6, 7, 9, 10]
Product: 907200
Maximum value: 10
Average value: 5.666666666666667
Standard deviation: 3.1622776601683795
5 in array?: true
4 in array?: false
Array:   []
Product: 1
Maximum value: 0
Average value: 0.0
Standard deviation: 0.0
5 in array?: false
4 in array?: false
Array:   [5]
Product: 5
Maximum value: 5
Average value: 5.0
Standard deviation: 0.0
5 in array?: true
4 in array?: false
Big Array: [3, 5, 2, 8, 1, 6, 7, 9, 10, 1, 5, 4]