Work out the difference between the highest value and the lowest value in the list below. \( -3.4,-11,-1.72,-9.618,-12.4,-5.03 \)

To find the difference between the highest and lowest values in the list, first identify the highest value, which is \(-1.72\), and the lowest value, which is \(-12.4\). Now, calculate the difference: \[ \text{Difference} = \text{Highest value} - \text{Lowest value} = -1.72 - (-12.4) \] This simplifies to: \[ -1.72 + 12.4 = 10.68 \] So, the difference between the highest and lowest value is \(10.68\).