JAVA

Write a class called Statistics that does basic statistical functions such:

$$ computing the average value $($mean$)$

$$ Getting the span of values over which your data set occurs $($range

$$ computing the midpoint between the lowest and highest value of the set $($median$)$

$$ computing the maximum

$$ computing the minimum

Implement the following constructors and instance methods as listed below:

$$ public Statistics$()-$ Constructor method to set set your list of values to default as an empty list

$$ public Statistics$($ArraysList vals$)-$ A constructor that takes a list of values to set your list data structure for computing statistics.

$$ public void add$($int val$)-$ add the parameter to the member field

$$ public void add$($ArraysList vals$)-$ Add the values in the provided arraylist to the list data structure for computing stats

$$ public int getAverage$()-$ returns the average of the values in the list

$$ public int getMaximum$()-$ returns the maximum of the values in the list

$$ public int getMinimum$()-$ returns the minimum of the values in the list

$$ public int getMedian$()-$ returns the median value in the list.

$$ public int getRange $-$ returns the range of the values in the list

$$ public void clear$()-$ set all member fields default values.