Find the first and third quartiles for each data set. \( 1388,78,85,74,66,82,68 \) 149,2

Step 1 ：1. Organize the data set: \( 66, 68, 74, 78, 82, 85, 1388 \)

Step 2 ：2. Find the median (Q2): \( Q2 = 78 \)

Step 3 ：3. Determine the first quartile (Q1): \( Q1 = \frac{66 + 68}{2} = 67 \)

Step 4 ：4. Determine the third quartile (Q3): \( Q3 = \frac{82 + 85}{2} = 83.5 \)