The following time series shows the sales of a particular product over the past months.MonthSales MonthSales1 105 7 145 2 135 8 140 3 120 9 100 4 105 10 80 5 90 11 100 6 120 12 110a. Construct a time series plot.b and c are shown in pictures. please help asap. 12c. Use a smoothing constant of a = 0.5 to compute the exponential smoothing forecasts (to 2 decimals). Enter negative value as negative number. If your answer iszero enter "0". Do not round intermediate calculations.Month124567891011011Time-SeriesValue1051351201059012014514010080100MSE (α = 0.3)MSE (α = 0.5)ForecastForecast Error12110Compute MSE (to 2 decimals). Do not round intermediate calculations.Error²☐☐☐☐☐☐☐☐☐☐☐0000000000000000000000X b. Use a = 0.3 to compute the exponential smoothing forecasts for the time series (to 2 decimals). Enter negative value as negative number. Do not round intermediatecalculations.Month167891011Time-SeriesValueMonth1051351201059012014514010080100ForecastTime-SeriesValue00000000000Forecast Error12110c. Use a smoothing constant of a=0.5 to compute the exponential smoothing forecasts (to 2 decimals). Enter negative value as negative number. If your answer iszero enter "0". Do not round intermediate calculations.ForecastError²0000000000000000000000Forecast ErrorError²K

Time series is the technique used to predict the variable based on time. Four components in the time…

The following time series shows the sales of a particular product over the past months. Month Sales Month Sales 1 105 7 145 2 135 8 140 3 120 9 100 4 105 10 80 5 90 11 100 6 120 12 110 a. Construct a time series plot. b and c are shown in pictures. please help asap.

The following time series shows the sales of a particular product over the past months. Month Sales Month Sales 1 105 7 145 2 135 8 140 3 120 9 100 4 105 10 80 5 90 11 100 6 120 12 110 a. Construct a time series plot. b and c are shown in pictures. please help asap.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

100%

The following time series shows the sales of a particular product over the past months.

Month
1	105	7	145
2	135	8	140
3	120	9	100
4	105	10	80
5	90	11	100
6	120	12	110

a. Construct a time series plot.

b and c are shown in pictures. please help asap.

12
c. Use a smoothing constant of a = 0.5 to compute the exponential smoothing forecasts (to 2 decimals). Enter negative value as negative number. If your answer is
zero enter "0". Do not round intermediate calculations.
Month
1
2
4
5
6
7
8
9
10
110
11
Time-Series
Value
105
135
120
105
90
120
145
140
100
80
100
MSE (α = 0.3)
MSE (α = 0.5)
Forecast
Forecast Error
12
110
Compute MSE (to 2 decimals). Do not round intermediate calculations.
Error²
☐☐☐☐☐☐☐☐☐☐☐
00000000000
00000000000
X

b. Use a = 0.3 to compute the exponential smoothing forecasts for the time series (to 2 decimals). Enter negative value as negative number. Do not round intermediate
calculations.
Month
1
6
7
8
9
10
11
Time-Series
Value
Month
105
135
120
105
90
120
145
140
100
80
100
Forecast
Time-Series
Value
00000000000
Forecast Error
12
110
c. Use a smoothing constant of a
=
0.5 to compute the exponential smoothing forecasts (to 2 decimals). Enter negative value as negative number. If your answer is
zero enter "0". Do not round intermediate calculations.
Forecast
Error²
00000000000
00000000000
Forecast Error
Error²
K

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