Module 8 : The Analysis Of Time Series
Advertisement expenditure (X) vs Sales (Y) figures for 10 years in Lacs of Rupees.
S.No.
X
Y
x2
y2
xy
1
50
700
21
274
441
75,076
5,754
2
50
650
21
274
441
50,176
4,704
3
50
600
21
174
441
30,276
3,654
4
40
500
11
74
121
5,476
814
5
30
450
1
24
1
576
24
6
20
400
-9
-26
81
676
234
7
20
300
-9
-126
81
15,876
1,134
8
15
250
-14
-176
196
30,976
2,464
9
10
210
-19
-216
361
46,656
4,104
10
5
200
-24
-226
576
51,076
5,424
Total
290
4260
0
0
2,740
3,06,840
28,310
1
2
3
4
5
6
7
8
9
10
Prof.S.G.Deshmukh & Prof.Arun Kanda
