1. Calculate the b parameter for the linear regression of the following data:

Period	Value
1	507
2	520
3	544
4	539
5	562
6	532
7	537
8	529

(Keep 3 decimals in your answer)

2. Calculate the a parameter for the linear regression of the following data:

Period	Value
1	8,997
2	9,111
3	9,114
4	9,007
5	9,023
6	9,021
7	8,890
8	8,963

(Keep 3 decimals in your answer)

3. Calculate the Standard Error of Estimate for the linear regression of the following data:

Period	Value
1	9,420
2	9,138
3	9,187
4	8,840
5	8,742
6	9,021
7	8,890
8	9,140

(Keep 2 decimals in your answer)

4. What is the seasonality factor for sales in Month 5?

Month	Sales
1	17,601
2	15,303
3	15,970
4	17,156
5	16,144
6	15,865
7	15,101
8	15,917
9	18,476
10	18,339
11	17,253
12	18,654

(Keep 3 decimals in your answer)

5. What is the exponential smoothing forecast for period 5 assuming that alpha = 0.5?

Period	Heat
1	418
2	411
3	412
4	413
5	418
6	414
7	421

(Keep 2 decimals in your answer)

6. What is the five period moving average for period 10 for the following data:

Period	Gallons
1	288
2	286
3	300
4	290
5	276
6	318
7	331
8	298
9	308

(Keep 2 decimal places in your answer)