The range of the following set of observations `2,3,5,9, 8, 7, 6, 5, 7, 4, 3` is

Options

A. 11
B. 7
C. 5.5
D. 6

Explanation

To find the range of the given set of observations, follow these steps:

### Step 1: Identify the highest value in the set
The given set of observations is:
\[ 2, 3, 5, 9, 8, 7, 6, 5, 7, 4, 3 \]

From this set, the highest value is:
\[ \text{Highest value} = 9 \]

### Step 2: Identify the lowest value in the set
Next, we need to find the lowest value in the same set:
\[ \text{Lowest value} = 2 \]

### Step 3: Calculate the range
The range is calculated using the formula:
\[ \text{Range} = \text{Highest value} - \text{Lowest value} \]

Substituting the values we found:
\[ \text{Range} = 9 - 2 = 7 \]

### Conclusion
Thus, the range of the given set of observations is:
\[ \text{Range} = 7 \]

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