You have just been hired as a data science intern for a consulting company in Toronto. Your boss is working with a local company that is interesting in evaluating its advertising effectiveness. You are asked to help in evaluating the effectiveness of the company's advertising for a particular product. Another intern provides you with 14 years of sales and advertising data both for the client company and its major competitor. Your task is to provide insight to the company. (Please note that this is a beginning exploratory analysis meant to provide guidance for further steps.) Analyse the data and provide your boss with (1) Clear conclusions/advice free from statistical jargon and (2) a summary of your final model(s) with appropriate diagnostics.

Year Number	Sales ($1000s)	Advertising ($1000s)	Advertising Ratio {Company/Competitor}	Personal Disposable Income ($ billion)	Sales
1	105,000	16,300	1.25	547.9	105,000
2	105,000	15,800	1.34	593.4	105,000
3	121,600	16,000	1.22	638.9	121,600
4	113,750	14,200	1	695.3	113,750
5	113,750	15,000	1.15	751.8	113,750
6	128,925	14,000	1.13	810.3	128,925
7	142,500	15,400	1.05	914.5	142,500
8	126,000	18,250	1.27	998.3	126,000
9	162,000	17,300	1.07	1096.1	162,000
10	191,625	23,000	1.17	1194.4	191,625
11	189,000	19,300	1.07	1311.5	189,000
12	210,000	23,056	1.54	1462.9	210,000
13	224,250	26,000	1.59	1641.7	224,250
14	245,000	28,000	1.56	1821.7	245,000