quarters sales
Mathematics, 17.10.2019 21:00 deee12345
Use both minitab program to solve the above models.(there is no topic)
quarters sales
1 105
2 135
3 120
4 105
1 90
2 120
3 145
4 140
1 100
2 80
3 100
4 110
problem .the above time series shows the sales of a particular product over 3 years.
consider the model:
ojzszkq6qtksuvork5cyii=
estimate all the parameters of the above model.
using the above model test the existence of first order autocorrelation.
based on your results in (b), predict the next four observations.
2. suppose
yt= b0 + b1t + b2 sin(2pt/4) + b3 cos(2pt/4) +et,
estimate all the parameters of trigonometric model.
using the above model test the existence of first order autocorrelation.
based on your results in (b), predict the next four observations.
compare models (1) and (2) and show which is better to predict the given data. state your reasons why the preferred model is better
e
Answers: 3
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Use both minitab program to solve the above models.(there is no topic)
quarters sales
quarters sales
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