For the following data, what is the standard error of the difference scores? $$\begin{array} { | r r }
\hline { \text { Before } } & \text { After } \
\hline 160 & 153 \
\hline 125 & 124 \
\hline 142 & 136 \
\hline 187 & 167 \
\hline
\end{array}$$
A) 8.10
B) 4.26
C) 4.05
D) 2.10

Question

For the following data, what is the standard error of the difference scores? $$\begin{array} { | r r } 
\hline { \text { Before } } & \text { After } \
\hline 160 & 153 \
\hline 125 & 124 \
\hline 142 & 136 \
\hline 187 & 167 \
\hline
\end{array}$$
A) 8.10
B) 4.26
C) 4.05
D) 2.10

Quizplus · Accepted Answer

The standard error of the difference scores is calculated by first finding the difference for each pair, then calculating the standard deviation of these differences, and finally dividing by the square root of the number of pairs.

For the Following Data, What Is the Standard Error of the Difference