Instruction 14-2
The following table contains the number of complaints received in a department store for the first six months of last year.
$$\begin{array} { c c }
\text { Month } & \text { Complaints } \
\text { January } & 36 \
\text { February } & 45 \
\text { March } & 81 \
\text { April } & 50 \
\text { May } & 108 \
\text { June } & 144
\end{array}$$
-Referring to Instruction 14-2,if a three-term moving average is used to smooth this series,what would be the last calculated value?
A) 93
B) 72
C) 114
D) 126

Question

Instruction 14-2
The following table contains the number of complaints received in a department store for the first six months of last year.
 $$\begin{array} { c c } 
\text { Month } & \text { Complaints } \
\text { January } & 36 \
\text { February } & 45 \
\text { March } & 81 \
\text { April } & 50 \
\text { May } & 108 \
\text { June } & 144
\end{array}$$
-Referring to Instruction 14-2,if a three-term moving average is used to smooth this series,what would be the last calculated value?
A) 93
B) 72
C) 114
D) 126

Quizplus · Accepted Answer

To calculate the three-term moving average, we take the average of the current value and the two values preceding it.

The first calculated value would be (99+87+78)/3 = 88.
The second calculated value would be (87+78+66)/3 = 77.
The third calculated value would be (78+66+90)/3 = 78.
The fourth calculated value would be (66+90+102)/3 = 86.
The fifth calculated value would be (90+102+126)/3 = 106.
The last calculated value would be (102+126+114)/3 = 114.

Therefore, the best choice is C) 114.

Instruction 14-2 the Following Table Contains the Number of Complaints

Instruction 14-2
the Following Table Contains the Number of Complaints