BI-LO appliance super store has oulets in several metropolitian area in new England the general sales manager aired a commercial for a digital camera on local tv stations prior to a sale starting on Sat.and ending Sun. she obtained the information for Sat.-Sun digital camera sale at various oulets and paired it with the # of times the advertismentwas shown on tv the purpose is to find whether there is a relationship between the # of times the advertisement was aired and digital camers sales
To know if there is a relationship between the # of times the advertisement was aired and digital camers sales, you have to plot the 5 pairings on a graph for example with digital camers sales on the y axis and the number of times the advertisement was aired on the x axis.
You can see the graph on the excel file attached :
You can notice that the pairings draw almost a straight line (shown also on the graph). We can say that there's a linear and positive relationship between the 2 different parameters. Positive because when you increase advertisement, you increase sales.
Thank you in advance for giving me a nice feedback.