Basic Statistics > A-Level Question Paper > Sophia Introduction to Statistics Unit 4 Milestone 4,. (All)

Sophia Introduction to Statistics Unit 4 Milestone 4,.

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Question 1 Which statement accurately describes the data's form, direction, and strength from the scatterplot below? Question 2 Raoul lives in Minneapolis and he is planning his spring break tri ... p. He creates the scatterplot below to assess how much his trip will cost. Which answer choice correctly indicates the explanatory and response variables for the scatterplot? Question 3 Brad reads a scatterplot that displays the relationship between the number of cars owned per household and the average number of citizens who have health insurance in neighborhoods across the country. The plot shows a strong positive correlation. Brad recalls that correlation does not imply causation. In this example, Brad sees that increasing the number of cars per household would not cause members of his community to purchase health insurance. Identify the lurking variable that is causing an increase in both the number of cars owned and the average number of citizens with health insurance. Question 4 Shawna finds a study of American men that has an equation to predict weight (in pounds) from height (in inches): ŷ = -210 + 5.6x. Shawna's dad’s height is 72 inches and he weighs 182 pounds. What is the residual of weight and height for Shawna's dad?  Question 5 For the plot below the value of r2 is 0.7783. Which of the following sets of statements is true? Question 6 A correlation coefficient between number of miles driven and number of gallons of gas remaining is most likely to be __________. Question 7 Data for price and thickness of soap is entered into a statistics software package and results in a regression equation of ŷ = 0.4 + 0.2x. What is the correct interpretation of the slope if the price is the response variable and the thickness is an explanatory variable? Question 8 Which of the following scatterplots shows a correlation affected by inappropriate grouping?  [Show More]

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