Ünite Sınavı Soruları

1
Price for period 2020 is 2, price for period 2021 is 5 and price for period 2022 is 6. What is the chain base price index for period 2022?
2
Price for the base period is 5 and price for the current period is 2. So what is the fixed price indes for the current period?
3
Which of the following best describes seasonal variation in a time series?
4
What distinguishes a weighted price index from an unweighted price index?
5
What is a key advantage of exponential smoothing methods over moving averages?
6
When calculating index numbers, what is the significance of choosing the base period?
7
How does a moving average address short-term fluctuations in a time series?
8
Which component of a time series reflects the observed but unpredictable changes after decomposing the effects of trend, cyclical movements, and seasonal variation?
9

Years

Y(t)

t

Y(t)t

t²

2015

1

1

1

1

2016

3

2

6

4

2017

5

3

15

9

Using the data in table, which of the following is the estimation value of slope parameters using the least squares method?
10

Years

Y(t)

t

Y(t)t

t²

2015

1

1

1

1

2016

3

2

6

4

2017

5

3

15

9

Using the data in table, which of the following is the equation of the linear trend model by the LS method?