3.18 LCD TVs, again As technology improves, the choice of televisions becomes more complicated. Should you choose an LCD TV, an LED TV, or a plasma TV? Does the price of an LCD TV depend on the size of the screen? In the table below, Consumer Reports gives the prices and screen sizes for the top 10 LCD TVs in the 46-inch and higher categories.

a. Which of the two variables (price and size) is the independent variable, and which is the dependent variable?

b. Construct a scatterplot for the data. Does the relationship appear to be linear?

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Brand Price ($) Size Sony Bravia KDL-52NsX800 2340 52 Sony Bravia KDL-46XBR10 2500 46 Samsung LN55C650 1600 55 Samsung UN46C8000 2200 46 Vizio VF550M 1330 55 Vizio SV472XVT 1400 47 Sony Bravia KDL-60EX700 2700 60 Samsung UN46C7000 2100 46 Sharp Aquos LED LC-52LE700UN 1620 52 LG 47LD450 900 47