def main():
    with open("data2.csv", 'r') as data:
        s = 0
        c = 0
        for v in data:
            s += float(v)
            c += 1

        p = s / c
        print(f"p = {p}")
        d = p * (1 - p)
        print(f"d = {d}")

if __name__ == "__main__":
    main()