1. The problem is to find the mean value, which is given as 191.13. 2. The mean (average) of a set of numbers is calculated using the formula: $$\text{Mean} = \frac{\text{Sum of all values}}{\text{Number of values}}$$ 3. To verify or calculate the mean, you need the total sum of the values and the count of those values. 4. If you have the sum and the count, plug them into the formula to get the mean. 5. For example, if the sum of values is $S$ and the number of values is $n$, then: $$\text{Mean} = \frac{S}{n} = 191.13$$ 6. Without additional data, we accept the mean as 191.13 as given. 7. This means the average of the data set is 191.13, which is the central value representing the data.