Find the range of the data: `11, 13, 9, 17, 13, 19, 10, 11`

Options

A. A)9
B. B)10
C. C)11
D. D)13

Answer

To find the range of the given data set, we will follow these steps:

### Step 1: Identify the Data Set
The data set provided is:
\[ 11, 13, 9, 17, 13, 19, 10, 11 \]

### Step 2: Determine the Maximum Value
We need to find the maximum value in the data set. By examining the numbers, we can see:
- The maximum value is \( 19 \).

### Step 3: Determine the Minimum Value
Next, we need to find the minimum value in the data set. By examining the numbers, we can see:
- The minimum value is \( 9 \).

### Step 4: Apply the Range Formula
The formula for calculating the range is:
\[ \text{Range} = \text{Maximum Value} - \text{Minimum Value} \]

Substituting the values we found:
\[ \text{Range} = 19 - 9 \]

### Step 5: Calculate the Range
Now, we perform the subtraction:
\[ \text{Range} = 10 \]

### Conclusion
The range of the data set is \( 10 \).