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Large Data Sets. Exercises use the same Appendix B data

Chapter 10, Problem 29BSC

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QUESTION:

Large Data Sets. Exercises 29–32 use the same Appendix B data sets as Exercises 29–32 in Section 10-2. In each case, find the regression equation, letting the first variable be the predictor (x) variable. Find the indicated predicted values following the prediction procedure summarized in Figure 10-5.

IQ and Brain Volume Refer to Data Set 6 in Appendix B and use the paired data consisting of IQ score and brain volume \((\mathrm{cm} 3)\) . Find the best predicted IQ score for someone with a brain volume of \(1000 \mathrm{~cm} 3\).

Equation Transcription:

Text Transcription:

(cm 3)

1000 cm 3

Questions & Answers

QUESTION:

Large Data Sets. Exercises 29–32 use the same Appendix B data sets as Exercises 29–32 in Section 10-2. In each case, find the regression equation, letting the first variable be the predictor (x) variable. Find the indicated predicted values following the prediction procedure summarized in Figure 10-5.

IQ and Brain Volume Refer to Data Set 6 in Appendix B and use the paired data consisting of IQ score and brain volume \((\mathrm{cm} 3)\) . Find the best predicted IQ score for someone with a brain volume of \(1000 \mathrm{~cm} 3\).

Equation Transcription:

Text Transcription:

(cm 3)

1000 cm 3

ANSWER:

Answer :

Step 1 of 2 :

Given, the paired data consisting of IQ score and brain volume (cm3)

IQ

Vol

96

1005

89

963

87

1035

87

1027

101

1281

103

1272

103

1051

96

1079

127

1034

126

1070

101

1173

96

1079

93

1067

88

1104

94

1347

85

1439

97

1029

114

1100

113

1204

124

1160

The claim is to find the  prediction value for someone with a brain volume of 1000 cm3

The regression equation is given by,

  = a + bx

Where, a =

           b =

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