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

Question

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

Quizplus · Accepted Answer

To find $\bar{d}$, the mean of the differences between each pair of X and Y values, first calculate the differences (d) for each pair, then find the mean of these differences. The differences are: 10, 35, 25, 29, 19, 31, 18. The mean of these differences is $\frac{10 + 35 + 25 + 29 + 19 + 31 + 18}{7} = \frac{167}{7} \approx 23.9$.

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

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