Find the mean absolute deviation for the data set.
If necessary, round your answer to the nearest hundredth.

8, 6, 6, 18, 17, 11

The mean is the average, of all the scores divided by the number of scores

For this data set, the mean would be 11

You do this by calculating 6+8+6+18+17+11 divided by 6 (which is the number of scores)

This gives you an answer of 11.

  11 coins for $1.99

Step-by-step explanation:

The maximum total less than $2 is $1.99. It takes 11 coins to make that total. It would take 1 fewer if the nickel were not required.

Starting with the minimum required coins, which total $0.91, we need to add $1.08 using a minimum number of coins. To minimize the added coins, we start with the largest we can use without going over the total: 2×50¢ + 1×5¢ + 3×1¢. These 6 coins added to the required 5 coins give the desired total using 11 coins.

  11 coins: $1.99 . . . . (3×50¢ +1×25¢ +1×10¢ +2×5¢ +4×1¢)

$1.99 is the highest possible total less than $2.00, and it takes a minimum of 11 coins to make that total.