A consumer psychologist wishes to determine whether playing music increases sales. The owner plays no music, soft rock, classical, or jazz and notes the sales for 28 people under these conditions. The following numbers are in dollar amounts per shopper.$\begin{array} { c c c c }
\hline \text { No Music } & \text { Soft Rock } & \text { Classical } & \text { Jazz } \
\hline 128 & 57 & 87 & 55 \
101 & 32 & 40 & 24 \
157 & 93 & 21 & 95 \
196 & 35 & 92 & 19 \
163 & 58 & 55 & 60 \
144 & 61 & 59 & 85 \
170 & 82 & 39 & 54 \
\hline
\end{array}$
-The sum of squares total (SST) for this problem is
A)17,451.714
B)63,902.714
C)21.293
D)46,451.000

Question

A consumer psychologist wishes to determine whether playing music increases sales. The owner plays no music, soft rock, classical, or jazz and notes the sales for 28 people under these conditions. The following numbers are in dollar amounts per shopper.$\begin{array} { c c c c } 
\hline \text { No Music } & \text { Soft Rock } & \text { Classical } & \text { Jazz } \
\hline 128 & 57 & 87 & 55 \
101 & 32 & 40 & 24 \
157 & 93 & 21 & 95 \
196 & 35 & 92 & 19 \
163 & 58 & 55 & 60 \
144 & 61 & 59 & 85 \
170 & 82 & 39 & 54 \
\hline
\end{array}$
-The sum of squares total (SST) for this problem is
A)17,451.714
B)63,902.714
C)21.293
D)46,451.000

Quizplus · Accepted Answer

The sum of squares total (SST) is calculated by summing the squared differences between each observation and the overall mean of all observations. Given the data, option B (63,902.714) is the correct calculation for SST, which accounts for the total variability in the dataset.

A Consumer Psychologist Wishes to Determine Whether Playing Music Increases