Question

Find the equation of the regression line for the given data. Then construct a scatter plot...

Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line.​ (Each pair of variables has a significant​ correlation.) Then use the regression equation to predict the value of y for each of the given​ x-values, if meaningful. The caloric content and the sodium content​ (in milligrams) for 6 beef hot dogs are shown in the table below.

font size decreased by 1 font size increased by 1 Calories comma xCalories, x

150150

170170

130130

120120

9090

190190

​(a)

xequals=160160

calories
​(b)

xequals=100100

calories

​Sodium, y

410410

460460

340340

380380

290290

510510

​(c)

xequals=140140

calories
​(d)

xequals=210210

calories

Find the regression equation.

ModifyingAbove y with caretyequals=nothingxplus+​(nothing​)

​(Round to three decimal places as​ needed.)

Homework Answers

Answer #1

Sum of X = 850
Sum of Y = 6084
Mean X = 141.6667
Mean Y = 1014
Sum of squares (SSX) = 6483.3333
Sum of products (SP) = 44700

Regression Equation = ŷ = bX + a

b = SP/SSX = 44700/6483.33 = 6.895

a = MY - bMX = 1014 - (6.89*141.67) = 37.265

ŷ = 6.895X + 37.265

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