Code:

data = [4, 7, 9, 12, 18]
sum_data = sum(data)
count_data = len(data)
mean_data = sum_data / count_data
print(f"Sum: {sum_data}")
print(f"Count: {count_data}")
print(f"Mean: {mean_data}")

Output:

Sum: 50
Count: 5
Mean: 10.0