Which of the following measures is NOT represented by the Step-And-Leaf Plot below?

1 | 1 2 2 7 7
2 | 1 4 4 7
3 | 3 5 6 8 9
Key: 3 | 5 means 3.5

A. The average number of hours slept in a day
B. The number of books read in a month
C. The speed of cars on a highway, in kilometers per hour
D. The amount of money spent on groceries, in dollars per week

To determine which measure is NOT represented by the Step-And-Leaf Plot, let's first understand what the Step-And-Leaf Plot represents.

A Step-And-Leaf Plot, also known as a Stem-and-Leaf Plot, is a way to organize and display numerical data. It divides each data point into a stem (the first digit or digits) and a leaf (the final digit). It provides a visual representation of the data set by showing individual data points and their distribution.

Looking at the Step-And-Leaf Plot given:

1 | 1 2 2 7 7
2 | 1 4 4 7
3 | 3 5 6 8 9

We can see that the stems represent the tens digit, while the leaves represent the ones digit. For example, the first row (1 | 1 2 2 7 7) means that the numbers represented are 11, 12, 12, 17, and 17.

Now, let's analyze each option in relation to the Step-And-Leaf Plot:

A. The average number of hours slept in a day: The Step-And-Leaf Plot does not provide any information about the average number of hours slept since it only displays the individual data points. To determine the average, additional calculations or information would be needed. Therefore, option A is a possible answer.

B. The number of books read in a month: Again, the Step-And-Leaf Plot does not provide information regarding the number of books read in a month. It only shows the individual data points and their distribution. Thus, option B is a possible answer.

C. The speed of cars on a highway, in kilometers per hour: The Step-And-Leaf Plot also does not provide information about the speed of cars on a highway. It solely displays the individual data points and their distribution. Consequently, option C is a possible answer.

D. The amount of money spent on groceries, in dollars per week: Since the Step-And-Leaf Plot does display a distribution of values (the individual data points), it could potentially represent the amount of money spent on groceries. Therefore, option D is not a possible answer.

Based on the explanations above, the measure NOT represented by the Step-And-Leaf Plot is D - the amount of money spent on groceries, in dollars per week.