Aresearcher investigating a new product for clearing up acne selects a random sample of 10 teenagers, gives them the facial product to use, and asks that they report back how many days it took for the facial condition to clear up. The results (in days) were as follows: 20, 8, 10, 14, 15, 14, 12, 11, 14, 13. Find the mean, median, mode, range, and standard deviation.