11. Which of the following procedures is always equivalent to adding 5 given numbers and then dividing the sum by 5 ? I. Multiplying the 5 numbers and then finding the 5th root of the product. II. Adding the 5 numbers, doubling the sum, and then moving the decimal point one place to the left. III. Ordering the 5 numbers numerically and then selecting the middle number. (A) None (B) I only (C) II only (D) III only (E) I and III |