Question

Here are earnings per share for two companies by quarter from the first quarter of three...

Here are earnings per share for two companies by quarter from the first quarter of three years ago through the second quarter of this year. Forecast earnings per share for the rest of this year and next year. Use exponential smoothing to forecast the third period of this year, and the time series decomposition method to forecast the last two quarters of this year and all four quarters of next year. (It is much easier to solve this problem on a computer spreadsheet so you can see what is happening.) EARNINGS PER SHARE QUARTER COMPANY A COMPANY B 3 years ago I $ 1.63 $ 0.19 II 2.34 0.25 III 1.15 0.22 IV 1.19 0.31 2 years ago I 1.61 0.23 II 2.03 0.32 III 1.18 0.33 IV 0.26 0.44 last year I 0.26 0.36 II –0.22 (loss) 0.45 III –0.94 (loss) 0.46 IV 0.20 0.45 this year I –1.59 (loss) 0.28 II 0.33 0.45 a. For the exponential smoothing method, choose the first quarter of 3 years ago as the beginning forecast. Make two forecasts: one with α = 0.20 and one with α = 0.10. (Negative values should be indicated by a minus sign. Round your answers to 3 decimal places.) Calculate the MAD for each forecast using data starting with second quarter of 3 years ago through second quarter of this year. (Round your answers to 3 decimal places.) Using the MAD method of testing the forecasting model's performance, plus actual data from 3 years ago through the second quarter of this year, how well did the model perform? Using the decomposition of a time series method of forecasting, forecast earnings per share for the last two quarters of this year and all four quarters of next year. (Negative values should be indicated by a minus sign. Round your answers to 3 decimal places.)

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Answer #1

Formula underlying exponential smoothing method can be seen below:

Ft = Ft-1 + alpha x (At-1 - Ft-1)

where

Ft-1 = Forecast for the period before current time period t

At-1 = Actual value for the period before current time period t

alpha = Weight between 0 and 1

Ft = Forecast for the current time period t

I am attaching a screenshot of my excel below in "show formula mode". This will tell you the formula used in each cell:

A220 200 201 Alpha 0.2 Period EPS (Actual) Forecast at Alpha 0.20 D Actual - Forecast Squared deviation Forecast at Alpha 0.10 D Actual - Forecast Squared deviation 203 Time 204 3 Years ago, 01 205 3 Years ago, Q2 206 3 Years apo 1.63 205-G205 -G2054$GS201(C205-G205) 弌206-G206 -G206+$GS201*(C206-G206) 弍207-G207 -G2074$G$2014C207-G207) 弌208-G208 -G208+$G$201 (C208-G208) -C209-G209 -G209+$G$201 C209-G209) C210-G210 -G210+ŞG$201 (C210-G210) -C211-G211 -G211+ŞGS201 (C211-G211) C212-G212 -G2 12+$G$201(C212-G212)弌213-G213 G213+$G$201*(C213-G213) -C214-G214 214 $G$201 (C214-G214) C215-G215 215+$G$201 (C215-G215) C216-G216 G216+$GS201*(C216-G216)弌217-G217 -C205-D205 C204 -C204 -D205+SDS201 (C205-D205) C206-D206 D206+$DS201(C206-D206] 弌207-D207 :0207+$D$201(C207-D207}弌208-D208 D208+ŞD$201 (C208-D208) D209 SDS201 (C209-D209) -D210+$D$201(C210-D210) -c211-D211 D211+$DS201(C211-D211)弌212-D212 D212+$D$201 (C212-D212) D213+SDS201 (C213-D213) -D214+SDS201 (C214-D214) -C215-D215 92 15:5DS201(C215-D215) -c216,D216 -0216+$D$201 (C216-D216) -D217+SDS201(C217-D217) 8204+1 207 3 Years ago, Q4 FB206+1 Q2,--820841 -H20642- , 03 B205+1 115 -E207A2 -E20842 -E209 2 -H207 2 H208A2 H209 2 -H21012 -H211A2 119 208 2 Years ago, 209 2 Years ago, 210 2 Years ago, 03 Q1 8207+1 161 C209-D209 -B209+1 1.18 -C210-D210 ニE21M2 E2 12n2 E2 1312 E214A2 -E215 2 -E216 2 -E217 2 2 Years ago, Q4 B210+1 0.26 212 1 Years ago, 01 8211+1 1 Years ago, 02 321241 214 1 Years apo, 03 6213+1 0.26 0.22 -0,94 -H213A2 커21442 커215a2 21642 H217A2 213 -C213-D213 丈214-D214 |Years ago, Q4-8214 16 This year, Q1 102 -8715+1 his year, 02 B2161 033 2 17-D217 18 This year, Q3 B217+1 -G2 17tSGS201不(C217-G217) 219 Mean AVERAGE(E205 E217) AVERAGE(F205:F217Below this, please find the actual output.

Alpha

                         0.20

                     0.10

Forecast

Time

Period

EPS (Actual)

Forecast at Alpha = 0.20

D = Actual - Forecast

Squared deviation

Forecast at Alpha = 0.10

D = Actual - Forecast

Squared deviation

3 Years ago, Q1

1

1.63

3 Years ago, Q2

2

2.34

1.630

0.71

0.50

1.630

0.71

0.50

3 Years ago, Q3

3

1.15

1.772

(0.62)

0.39

1.701

(0.55)

0.30

3 Years ago, Q4

4

1.19

1.648

(0.46)

0.21

1.646

(0.46)

0.21

2 Years ago, Q1

5

1.61

1.556

0.05

0.00

1.600

0.01

0.00

2 Years ago, Q2

6

2.03

1.567

0.46

0.21

1.601

0.43

0.18

2 Years ago, Q3

7

1.18

1.659

(0.48)

0.23

1.644

(0.46)

0.22

2 Years ago, Q4

8

0.26

1.564

(1.30)

1.70

1.598

(1.34)

1.79

1 Years ago, Q1

9

0.26

1.303

(1.04)

1.09

1.464

(1.20)

1.45

1 Years ago, Q2

10

-0.22

1.094

(1.31)

1.73

1.344

(1.56)

2.44

1 Years ago, Q3

11

-0.94

0.831

(1.77)

3.14

1.187

(2.13)

4.53

1 Years ago, Q4

12

0.20

0.477

(0.28)

0.08

0.974

(0.77)

0.60

This year, Q1

13

-1.59

0.422

(2.01)

4.05

0.897

(2.49)

6.19

This year, Q2

14

0.33

0.019

0.31

0.10

0.648

(0.32)

0.10

This year, Q3

15

0.082

0.617

Mean

(0.60)

1.03

(0.78)

1.42

The forecast for Q3 of this year is shown in the table above. Forecast EPS for Q3 of this year = 0.082 and 0.617 or Alpha= 0.2 and 0.1 respectively (Please see the table above)

MAD = Mean absolute deviation = -0.60 and -0.78 for Alpha= 0.2 and 0.1 respectively (Please see the table above)

MSD = mean squared deviation = 1.03 and 1.42 for Alpha= 0.2 and 0.1 respectively (Please see the table above)

None of the forecasting techniques are accurate. Hence, it's very difficult to objectively comment on the performance of the forecast. However based on MAD and MSD, the forecasting model has done reasonably well in case of Alpha = 0.20. The forecast model with Alpha = 0.2 is better than that with Alpha = 0.10.

-------------------------

Using the decomposition of a time series method of forecasting, forecast earnings per share for the last two quarters of this year and all four quarters of next year.

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