The Two Data Sets Are Dependent $\bar { d }$ To the Nearest Tenth

Multiple Choice

The two data sets are dependent. Find $\bar { d }$ to the nearest tenth.
- $$\begin{array} { l | l l l l l l l } \mathrm { X } & 227 & 189 & 220 & 182 & 246 & 277 & 302 \\\hline \mathrm { Y } & 217 & 154 & 195 & 153 & 227 & 246 & 284\end{array}$$

A) 143.4
B) 23.9
C) 14.3
D) 31.1