At the same time each day, a researcher records the temperature in each of three classrooms? The table shows the temperatures in degrees Fahrenheit recorded for one week. $\begin{array}{c|c|c}
\text { Classroom \#1 } & \text { Classroom \#2 } & \text { Classroom \#3 } \
\hline 78 & 71 & 77 \
75 & 69 & 73 \
73 & 72 & 72 \
66 & 72 & 71 \
68 & 65 & 70 \
71 & 73 & 62 \
72 & 71 & 79
\end{array}$ How are the analysis of variance results affected if the same constant is added to every one of
The original sample values?
A) The test statistic increases by the value of the constant.
B) The test statistic increases by a factor of the constant.
C) The test statistic is divided by the value of the constant.
D) The results are not affected.

Question

Quizplus · Accepted Answer

Adding a constant to all values does not affect the variance, so the analysis of variance results remain unchanged.

At the Same Time Each Day, a Researcher Records the Temperature