Mathematics > QUESTIONS & ANSWERS > MATH 225 WEEK 8 FINAL EXAM (4 VERSIONS)/ MATH 225N WEEK 8 FINAL EXAM / MATH225 WEEK 8 FINAL EXAM (All)

MATH 225 WEEK 8 FINAL EXAM (4 VERSIONS)/ MATH 225N WEEK 8 FINAL EXAM / MATH225 WEEK 8 FINAL EXAM

Document Content and Description Below

Week 8 questions and answers Performing Linear Regressions with Technology An amateur astronomer is researching statistical properties of known stars using a variety of databases. They collect the ... absolute magnitude or MV and stellar mass or M⊙ for 30 stars. The absolute magnitude of a star is the intensity of light that would be observed from the star at a distance of 10 parsecs from the star. This is measured in terms of a particular band of the light spectrum, indicated by the subscript letter, which in this case is V for the visual light spectrum. The scale is logarithmic and an MV that is 1 less than another comes from a star that is 10 times more luminous than the other. The stellar mass of a star is how many times the sun's mass it has. The data is provided below. Use Excel to calculate the correlation coefficient r between the two data sets, rounding to two decimal places. Correct! You nailed it. r= −0.93 Answer Explanation The correlation coefficient, rounded to two decimal places, is r≈−0.93. A market researcher looked at the quarterly sales revenue for a large e-commerce store and for a large brick-and-mortar retailer over the same period. The researcher recorded the revenue in millions of dollars for 30 quarters. The data are provided below. Use Excel to calculate the correlation coefficient r between the two data sets. Round your answer to two decimal places. Yes that's right. Keep it up! r= −0.81 Answer Explanation The correlation coefficient, rounded to two decimal places, is r≈−0.81. The table below contains the geographic latitudes, x, and average January temperatures, y, of 20cities. Use Excel to find the best fit linear regression equation. Round the slope and intercept to two decimal places. x y 46 23 32 60 39 40 33 59 38 57 40 33 42 33 30 64 34 56 HelpCopy to ClipboardDownload CSV Yes that's right. Keep it up! y = −2.68, x147.24 Thus, the equation of line of best fit with slope and intercept rounded to two decimal places is yˆ=−2.68x+147.24. An organization collects information on the life expectancy (in years) of a person in certain countries and the fertility rate per woman in those countries. The data for 21 randomly selected countries for the year 2011 is given below. Use Excel to find the best fit linear regression equation, where fertility rate is the explanatory variable. Round the slope and intercept to two decimal places. y = −4.21, x 83.68 Answer Explanationyˆ=−4.21, x+83.68. An economist is trying to understand whether there is a strong link between CEO pay ratio and corporate revenue. The economist gathered data including the CEO pay ratio and corporate revenue for 30 companies for a particular year. The pay ratio data is reported by the companies and represents the ratio of CEO compensation to the median employee salary. The data are provided below. Use Excel to calculate the correlation coefficient r between the two data sets. Round your answer to two decimal places. Perfect. Your hard work is paying off � r= −0.17 The correlation coefficient, rounded to two decimal places, is r≈−0.17. A researcher is interested in whether the variation in the size of human beings is proportional throughout each part of the human. To partly answer this question they looked at the correlation between the foot length (in millimeters) and height (in centimeters) of 30 randomly selected adult males. The data is provided below. Use Excel to calculate the correlation coefficient r between the two data sets. Round your answer to two decimal places. Great work! That's correct. r= 0.50 The correlation coefficient, rounded to two decimal places, is r≈0.50. The table below gives the average weight (in kilograms) of certain people ages 1–20. Use Excel to find the best fit linear regression equation, where age is the explanatory variable. Round the slope and intercept to two decimal places. Answer 1: That's not right - let's review the answer. y = 0.35, x28.99 Answer 2: Well done! You got it right. [Show More]

Last updated: 7 months ago

Preview 1 out of 55 pages

Reviews( 0 )

Recommended For You

 Mathematics> QUESTIONS & ANSWERS > MATH 225N Week 1 Evidence, Claims, and types Questions and Answers (All)

preview
MATH 225N Week 1 Evidence, Claims, and types Questions and Answers

Week 1 Evidence, Claims, and types Questions and Answers 1. A study is planned to research the effects of drinking coffee on hours of sleep. Would an experimental or observational study design be m...

By Kirsch , Uploaded: Mar 30, 2020

$10

 Statistics> QUESTIONS & ANSWERS > MATH 225N WEEK 4 QUIZ. Chamberlain College of Nursing (All)

preview
MATH 225N WEEK 4 QUIZ. Chamberlain College of Nursing

MATH 225N WEEK 4 QUIZ. Chamberlain College of Nursing Alice sells boxes of candy at the baseball game and wants to know the mean number of boxes she sells. The numbers for the games so far are liste...

By Academia1434 , Uploaded: Oct 15, 2020

$13

 Mathematics> QUESTIONS & ANSWERS > MATH 225 WEEK 8 FINAL EXAM (4 VERSIONS)/ MATH 225N WEEK 8 FINAL EXAM / MATH225 WEEK 8 FINAL EXAM (LATEST, 2020): CHAMBERLAIN COLLEGE OF NURSING |100% CORRECT ANSWERS, DOWNLOAD TO SCORE A| (All)

preview
MATH 225 WEEK 8 FINAL EXAM (4 VERSIONS)/ MATH 225N WEEK 8 FINAL EXAM / MATH225 WEEK 8 FINAL EXAM (LATEST, 2020): CHAMBERLAIN COLLEGE OF NURSING |100% CORRECT ANSWERS, DOWNLOAD TO SCORE A|

Question The table shows data collected on the relationship between the time spent studying per day and the time spent reading per day. The line of best fit for the data is yˆ=0.16x+36.2. Assume th...

By Nutmegs , Uploaded: Feb 01, 2022

$13

 Statistics> QUESTIONS & ANSWERS > MATH 225N Week 4 Statistics Quiz (Version 2) - Chamberlain College of Nursing. Complete solutions (All)

preview
MATH 225N Week 4 Statistics Quiz (Version 2) - Chamberlain College of Nursing. Complete solutions

MATH 225N Week 4 Quiz (Version 2) 1. Question: Brayden tosses a coin 500 Of those 500times, he observes heads a total of 416 times. Calculations show that the probability of this occurring by chance...

By Expert1 , Uploaded: Apr 27, 2020

$15

 Statistics> QUESTIONS & ANSWERS > MATH 225N Week 6 Statistics Quiz Solutions _ Chamberlain College of Nursing. Q and A solution (All)

preview
MATH 225N Week 6 Statistics Quiz Solutions _ Chamberlain College of Nursing. Q and A solution

MATH 225N Week 6 Statistics Quiz Solutions Q and A solution chamberlain college of nursing Question 1 A statistics professor recently graded final exams for students in her introductory statistics...

By YongSam , Uploaded: Sep 22, 2020

$14.5

 Mathematics> QUESTIONS & ANSWERS > MATH 225N Week 5 Understanding Normal Distribution - Complete Questions & All the correct Answers, Chamberlain. (All)

preview
MATH 225N Week 5 Understanding Normal Distribution - Complete Questions & All the correct Answers, Chamberlain.

MATH 225N Week 5 Understanding Normal Distribution 1. Question: Lexie averages 149 points per bowling game with a standard deviation of 14 Suppose Lexie’s points per bowling game are … Let X= the num...

By Expert1 , Uploaded: Apr 26, 2020

$10.5

 Mathematics> QUESTIONS & ANSWERS > MATH 225N Week 8 Final Exam Question and Answers. Already graded A. MATH225N Chamberlain College of Nursing (All)

preview
MATH 225N Week 8 Final Exam Question and Answers. Already graded A. MATH225N Chamberlain College of Nursing

MATH 225 Week 8 Final Exam Question and Answers ( Latest Versions): Statistical reasoning for health sciences : Chamberlain College of Nursing MATH225N Week 8 Final Exam Question and Answers ( Latest...

By James , Uploaded: Apr 28, 2020

$15.5

 *NURSING> QUESTIONS & ANSWERS > NR 503 Population Health, Epidemiology Week 8 Final Exam Study Guide. Chapter 16-20. Chamberlain College of Nursing (All)

preview
NR 503 Population Health, Epidemiology Week 8 Final Exam Study Guide. Chapter 16-20. Chamberlain College of Nursing

NR 503 Week 8 Final Exam Study Guide; Chapter 16-20 1. Question: A large company institutes a new wellness program aimed at improving the health of its 50,000 employees. As a part of the program, all...

By Expert#1 , Uploaded: Apr 04, 2020

$12.5

 Health Care> QUESTIONS & ANSWERS > HIM 370 Week 8 Final Exam Already Graded A (All)

preview
HIM 370 Week 8 Final Exam Already Graded A

(CO 1) Gail Smith oversees all activities associated with the development, implementation, and administration of Health Science Center policies and procedures covering the privacy of, and access to,...

By Nutmegs , Uploaded: Jan 02, 2022

$12

 *NURSING> QUESTIONS & ANSWERS > TestBank: NR 508 Final Exam Preparation|Latest 2019/2020 Complete 0Guide| Chapter 1-Chapter 54 / NR 508 Advanced Pharmacology TestBank Final Exam Prep, A+ Guide. (All)

preview
TestBank: NR 508 Final Exam Preparation|Latest 2019/2020 Complete 0Guide| Chapter 1-Chapter 54 / NR 508 Advanced Pharmacology TestBank Final Exam Prep, A+ Guide.

NR508 Final Questions Chapter 1 1. Nurse practitioner prescriptive authority is regulated by: 1. The National Council of State Boards of Nursing 2. The U.S. Drug Enforcement Administration 3....

By Expert1 , Uploaded: Jun 08, 2020

$19

$13.00

Add to cart

Instant download

Can't find what you want? Try our AI powered Search

OR

GET ASSIGNMENT HELP
52
0

Document information


Connected school, study & course



About the document


Uploaded On

Feb 01, 2022

Number of pages

55

Written in

Seller


seller-icon
Nutmegs

Member since 2 years

571 Documents Sold


Additional information

This document has been written for:

Uploaded

Feb 01, 2022

Downloads

 0

Views

 52

Document Keyword Tags

THE BEST STUDY GUIDES

Avoid resits and achieve higher grades with the best study guides, textbook notes, and class notes written by your fellow students

custom preview

Avoid examination resits

Your fellow students know the appropriate material to use to deliver high quality content. With this great service and assistance from fellow students, you can become well prepared and avoid having to resits exams.

custom preview

Get the best grades

Your fellow student knows the best materials to research on and use. This guarantee you the best grades in your examination. Your fellow students use high quality materials, textbooks and notes to ensure high quality

custom preview

Earn from your notes

Get paid by selling your notes and study materials to other students. Earn alot of cash and help other students in study by providing them with appropriate and high quality study materials.


$13.00

WHAT STUDENTS SAY ABOUT US


What is Browsegrades

In Browsegrades, a student can earn by offering help to other student. Students can help other students with materials by upploading their notes and earn money.

We are here to help

We're available through e-mail, Twitter, Facebook, and live chat.
 FAQ
 Questions? Leave a message!

Follow us on
 Twitter

Copyright © Browsegrades · High quality services·