1
GATE ME 2010
MCQ (Single Correct Answer)
+2
-0.6
The demand and forecast for February are $$12000$$ and $$10275,$$ respectively. Using single exponential smoothening method (smoothening coefficient $$= 0.25$$), forecast for the month of March is
A
$$431$$
B
$$9587$$
C
$$10706$$
D
$$11000$$
2
GATE ME 2008
MCQ (Single Correct Answer)
+2
-0.6
A moving average system is used for forecasting weekly demand. $${F_1}\left( t \right)$$ and $${F_2}\left( t \right)$$ are sequences of forecasts with parameters $${m_1}$$ and $${m_2}$$, respectively, where $${m_1}$$ and $${m_2}\left( {{m_1} > {m_2}} \right)$$ denote the numbers of weeks over which the moving averages are taken. The actual demand shows a step increase from $${d_1}$$ to $${d_2}$$ at a certain time. Subsequently,
A
neither $${F_1}\left( t \right)$$ nor $${F_2}\left( t \right)$$ will catch up with the value $${d_2}$$
B
both sequences $${F_1}\left( t \right)$$ and $${F_2}\left( t \right)$$ will reach $${d_2}$$ in the same period
C
$${F_1}\left( t \right)$$ will attain the value $${d_2}$$
D
$${F_2}\left( t \right)$$ will attain the value $${d_2}$$
3
GATE ME 2005
MCQ (Single Correct Answer)
+2
-0.6
The sales of a product during the last four years were $$860, 880, 870$$ and $$890$$ units. The forecast for the fourth year was $$876$$ units. If the forecast for the fifth year, using simple exponential smoothing, is equal to the forecast using a three period moving average, the value of the exponential smoothing constant $$\alpha$$ is
A
$${1 \over 7}$$
B
$${1 \over 5}$$
C
$${2 \over 7}$$
D
$${2 \over 5}$$
4
GATE ME 2003
MCQ (Single Correct Answer)
+2
-0.6
The sale of cycles in a shop in four consecutive months are given as $$70, 68, 82 95.$$ Exponentially smoothing average method with a smoothing factor of $$0.4$$ is used in forecasting. The expected number of sales in the next month is
A
$$59$$
B
$$72$$
C
$$86$$
D
$$136$$
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