Consider the following data from a small bookstore. Number of Salespeople working SaleslinSlOOO} 2 10 3 11 Tr' 13 9 14 10 18 10 20 12 20 15 22 16 22 20 26 3 = 10.4 __ _ if 1316 SD(x] = 5.64 50m = 5.34 r: 0.965 a] Prepare a scatterplot of Sales against Number of Salespeople working. b} What can you say about the direction of the association? c] What can you say about the form of he relationship? d} What can you say about the strength ofthe relationship? e} Does the scatterplot show any outliers? f] a] h} i] i] k} 2. Fill in the missing information in the table below: Find the slope? What does it mean, in this context? Find the intercept? If 13 people are working, what sales do you predict? If sales are actually $25000, what is the value of the residual? Have we overestimated or underestimated the sales? f S, 17 5!, r f = b o tbtx a} 10 2 20 3 0.5 b} 2 0.06 12 1.2 0.4 c} 12 6 0.8 J; = 200.4x d} 2.5 1.2 100 f=100+50 x