这个题我又不会了，求解答

def general_stats(x1,x2,x3,x4,x5):
    result = []
    sum_x = sum([x1,x2,x3,x4,x5])
    result.append(sum_x)
    average_x = sum_x / 5
    result.append(average_x)
    variance_x = ((x1-average_x)**2+(x2-average_x)**2+(x3-average_x)**2+(x4-average_x)**2+(x5-average_x)**2)/5
    result.append(variance_x)
    return result