Question 1189268
Here's how to calculate Justin's deviation score:

1. **Calculate the mean of the blood pressure data:**
   (126 + 101 + 99 + 111 + 101 + 105 + 142 + 126 + 124) / 9 = 117.22

2. **Subtract the mean from Justin's blood pressure:**
   124 - 117.22 = 6.78

**Answer:** Justin's deviation score is 6.78.