ols View Document1 - Word Firearms and Death Rates for Industrialized Countries e) The U.S. is the point over in the far right upper corner. Does it appear to be an 14 fluential (pg 131 notes )observation? Explain. No it only has large leverage and small leverage. It needs large lever age and large residue has to effect bothe leve 12 and residuel f) What is the regression equation? y^-?x+? See box above and copy y^- 0.866x 10 0.0524 g) What is the slope of the linear regression equation? Interpret t Firearm Death Rate (per 100,000 people) slope in the context of the situation. On average the firearm ownership would increase by 1 we would express the deat y = 0.0866x + 0.0524 rate to increase by 0.0866 per 100000 people r? = 0.773 MAT 133: Ch. 4 Review WS p.3 Continuing with the Firearm Data: N Pg 118)h) What is the y-intercept of the linear regression equation? Explain why the y-intercept does not make sense in the context 40 60 80 100 of the situation. x=0, 0.0524 Firearm Ownership (per 100 people) Death rate will never be 0 a) What appears to be the approximate sample size? (Sample count the dots) Because fire arm ownership will never be 0 26 i) The U.S. has a firearm ownership rate of 120.5 per 100 persons. What would the b) What is the explanatory variable? Fire arms ownership 120 (121) ans J least-squares regression model predict is the U.S. death rate by fire- arms (Give 2 decimal places and units) c) What is the response variable? Fire arm death rate ople y= (120.5)0.0866= 0.0524 = 44.9 per 100,000 people d) What type of data is the variable "Firearm Death Rate"? (Circle one) j) The U.S. actually had a death rate of 12.21 deaths per 100,000 people due to fire- Dicreet countable arms. Find the residual (Give 2 decimal places and units). Interpret this value in the While continuous is measurable context of the situation . observed y minus predicted y 1.72 the us had a fire arm Qualitative Quantitative, Discrete Quantitative, Continuous death rate of 1.72 above the 1. 72 deaths per 100 thous Focus s 3-4 of 7 corned hulu W JC G