A professional body wishes to analyse the performance of its students on a particular two-part examination. It records the scores obtained by a sample of 12 students on the first part of the exam, and the scores obtained by the same students on the second part of the exam. The results are as follows: StudentABCDEFGHIJKLFirst-part exam score x (%)824973606177658591535973Second-part exam score y (%)765875667071769287596371 Calculate the fitted linear regression equation of y on x. Comment on the relationship between the scores obtained in the two exams.

Name: A professional body wishes to analyse the performance of its students
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Description: A professional body wishes to analyse the performance of its students on a particular two-part examination. It records the scores obtained by a sample of 12 students on the first part of the exam, and the scores obtained by the same students on the s

Given observation X Y X2 Y2 XY 82 76 6724 5776 6232 49 58 2401…

Answered: A professional body wishes to analyse…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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A professional body wishes to analyse the performance of its students on a particular two-part examination. It records the scores obtained by a sample of 12 students on the first part of the exam, and the scores obtained by the same students on the second part of the exam. The results are as follows:

Student	A	B	C	D	E	F	G	H	I	J	K	L
First-part exam score x (%)	82	49	73	60	61	77	65	85	91	53	59	73
Second-part exam score y (%)	76	58	75	66	70	71	76	92	87	59	63	71

Calculate the fitted linear regression equation of y on x.
Comment on the relationship between the scores obtained in the two exams.

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