Jllustration 12.4. (Odd number of years.) Taking the original values the actual sales for the years 1960-66 given in Table 12.4 the application of the short-cut method may be illustrated in Table 12.5. •EXY will not be zero as EXY is the sum of the product of individual values of X and Y and is not the product of EX and EY.

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TABLE 12.4
Actual sales
Product of
of cereals
(*000 tonnes)
Cols.
Trend in Estimated Sales
(2) and (3)
Year
Yc=4.571+.857 X
XY
3
5
6
1960
3
4.571+.857(0)=4.57
4.571+.857(1)=5.43
4.571+.857(2)=6.29
4.571+.857(3)=7.14
4.571+.857(4) = 8.00
4.571+.857(5)=8.86
4.571+.875(6)= 9.71
1961
1
7
1962
12
4
1963
3
24
9.
1964
4
9.
36
16
1965
7
35
25
1966
6.
10
36
N=7 EX=21
ΣΥ-50
ΣΥΥ-174 Σ 91
Total of trend values 50
%3D
Transcribed Image Text:TABLE 12.4 Actual sales Product of of cereals (*000 tonnes) Cols. Trend in Estimated Sales (2) and (3) Year Yc=4.571+.857 X XY 3 5 6 1960 3 4.571+.857(0)=4.57 4.571+.857(1)=5.43 4.571+.857(2)=6.29 4.571+.857(3)=7.14 4.571+.857(4) = 8.00 4.571+.857(5)=8.86 4.571+.875(6)= 9.71 1961 1 7 1962 12 4 1963 3 24 9. 1964 4 9. 36 16 1965 7 35 25 1966 6. 10 36 N=7 EX=21 ΣΥ-50 ΣΥΥ-174 Σ 91 Total of trend values 50 %3D
IIlustration 12.4. (Odd number of years.) Taking the original
values the actual sales for the years 1960-66 given in Table 12.4 the
application of the short-cut method may be illustrated in Table 12.5.
•EXY will not be zero as EXY is the sum of the product of individual values
of X and Y and is not the product of £X and EY.
Transcribed Image Text:IIlustration 12.4. (Odd number of years.) Taking the original values the actual sales for the years 1960-66 given in Table 12.4 the application of the short-cut method may be illustrated in Table 12.5. •EXY will not be zero as EXY is the sum of the product of individual values of X and Y and is not the product of £X and EY.
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