Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

The accompanying data on x = head circumference z score (a comparison score with peers of the same age - a positive score suggests a

The accompanying data on x = head circumference z score (a comparison score with peers of the same age - a positive score suggests a larger size than for peers) at age 6 to 14 months and y = volume of cerebral grey matter (in ml) at age 2 to 5 years were read from a graph in an article.

Cerebral Grey Matter (ml) 2-5 yr Head Circumfer- ence z Scores at 6-14 Months
680 -0.72
690 1.6
700 -0.27
720 0.28
740 0.33
740 1.9
750 1.5
750 2.4
760 1.5
780 1.5
790 2.4
810 2.5
815 3.2
820 2.6
825 0.93
835 2.75
840 2.7
845 2.6

(a) What is the value of the correlation coefficient? (Give the answer to two decimal places.) r = (b) Find the equation of the least-squares line. (Give the answer to two decimal places.) =

(c) Predict the volume of cerebral grey matter for a child whose head circumference z score at age 12 months was 1.7. (Give the answer to two decimal places.)

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image_2

Step: 3

blur-text-image_3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Probability and Random Processes With Applications to Signal Processing and Communications

Authors: Scott Miller, Donald Childers

2nd edition

123869811, 978-0121726515, 121726517, 978-0130200716, 978-0123869814

More Books

Students also viewed these Mathematics questions

Question

How might the bank solve this problem? LOP8

Answered: 1 week ago