please explain well

Consumer Research Inc. is an independent agency that conducts research on consumer attitudes and behaviors for a variety of firms. In one study, a client asked for an investigation of consumer characteristics to explain the annual amount that credit card users charge on their accounts. Data collected on 50 credit card holders on explanatory variables income (in thousands of dollars), household size and dependent variable credit card amount expressed in dollars are portrayed on scatter plots below a. (2pt)Refer to scatter diagrams and comment on the relationship of each explanatory variable to Credit card amount. Together the scatter plots the plotted points are cluster composed and in increasing order from left to right shows a strong and positive linear connection between the two variables.b. (2pReport the statistical significance of the model. The problem show sufficient evidence to conclude that there is a significant linear connection between credit card amount Model 1 - ANOVAL and income, F (1, 48) = 31.751, p