
    Given a student's scores across multiple assessments, write a function that calculates the sum of their highest and lowest scores to understand their performance range. The scores are provided as a collection of numerical values, and the function should help identify the extent of variation in the student's academic performance.
    

    
def big_sum(nums):
    """
    Given a student's scores across multiple assessments, write a function that calculates the sum of their highest and lowest scores to understand their performance range. The scores are provided as a collection of numerical values, and the function should help identify the extent of variation in the student's academic performance.
    

    """
def big_sum(nums):
    """
    Given a student's scores across multiple assessments, write a function that calculates the sum of their highest and lowest scores to understand their performance range. The scores are provided as a collection of numerical values, and the function should help identify the extent of variation in the student's academic performance.
    

    """
    sum = max(nums) + min(nums)
    return sum