Three groups of individuals each see an ad (labeled Ad1,Ad2,and Ad3 below).Consider the responses (shown below)to a question that asks whether a respondent was positive or negative toward the ad viewed.. $\begin{array}{llr}
\hline \text { Response Options } & \text { Ad 1 } & \text { Ad 2 } & \text { Ad } 3 \
\hline\
\text { Strong positive (1) } & 20\% & 50\%&5\% \
\text { Slight positive ~}(2) & 20 & 0&15 \
\text { Neutral ~~~~~~~~~~~~~} (3) & 20&0&60 \
\text { Slight negative ~}(4) & 20 & 0 &15\
\text { Strong negative }(5) & 20 & 50&5\\
\text { Mean } & 3.0 & 3.0 & 3.0 \
\hline
\end{array}$ Which commercial,if any,will have the largest standard deviation?
A)1
B)2
C)3
D)The standard deviation for all three commercials will be the same.

Question

Three groups of individuals each see an ad (labeled Ad1,Ad2,and Ad3 below).Consider the responses (shown below)to a question that asks whether a respondent was positive or negative toward the ad viewed.. $\begin{array}{llr}
\hline \text { Response Options } & \text { Ad 1 } & \text { Ad 2 } & \text { Ad } 3 \
\hline\
\text { Strong positive (1) } & 20\% & 50\%&5\% \
\text { Slight positive ~}(2) & 20 & 0&15 \
\text { Neutral ~~~~~~~~~~~~~}  (3) & 20&0&60 \
\text { Slight negative ~}(4) & 20 & 0 &15\
\text { Strong negative }(5) & 20 & 50&5\\
\text { Mean } & 3.0 & 3.0 & 3.0 \
\hline
\end{array}$ Which commercial,if any,will have the largest standard deviation?
A)1
B)2
C)3
D)The standard deviation for all three commercials will be the same.

Quizplus · Accepted Answer

Ad2 will have the largest standard deviation because it has the highest range of responses (60% positive and 40% negative), indicating greater variability in opinions among the group. Ad1 has the smallest range of responses (80% positive and 20% negative), indicating less variability, and Ad3 has a range of 50% positive and 50% negative, which falls between Ad1 and Ad2 but still has less variability than Ad2.

Three Groups of Individuals Each See an Ad (Labeled Ad1,Ad2,and