# Q2 mark = [] while True: m = float(input("Enter quiz mark: ")) if m < 0.0: break else: mark.append(m) sum = 0.0 for i in mark: sum += i mean = sum / len(mark) print("Mean = ", mean) var = 0.0 for i in mark: var += (i - mean) ** 2 var = var / len(mark) print(f"Variance = {var}")