Find the correlation coefficient between X and Y. a. None of the other choices b. 0.8410 O c. 0.6402 d. 0.7469 What is the direction of the linear association? a. None of the other choices b. Weak c. Strong
Find the correlation coefficient between X and Y. a. None of the other choices b. 0.8410 O c. 0.6402 d. 0.7469 What is the direction of the linear association? a. None of the other choices b. Weak c. Strong
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Topic Video
Question
Hi, I just need hel with the second attached questions please. The first one is just a refference.

Transcribed Image Text:Find the correlation coefficient between X and Y.
a. None of the other choices
b. 0.8410
c. 0.6402
d. 0.7469
What is the direction of the linear association?
a. None of the other choices
b. Weak
c. Strong
d. Moderate
Calculate the coefficient of determination.
a. 0.5579
b. None of the other choices
c. 0.4099
d. 0.7073
Determine the least squares regression equation.
a. ý = 516.3330+0.2445r
b. ý = -2755.8231 + 2.282.r
c. ý = 1383.7785+0.2445r
d. ý
-468.299 + 2.282.r

Transcribed Image Text:EXAMPLE 3.
Sam is interested in predicting the amount of time it takes him to write a report (minutes) based on its word count. He randomly selects 7 reports and records the amount of
time it took him to write each report and the corresponding word count. Given the following table of additional information:
1,606
909
|1,222,691
|130,988
E( - 2)(y: - )298,909
Identify, in words, the dependent variable.
a. X = a report's word count
b. Y = a report's word count
c. Y = amount of time it takes Sam to write a report (minutes)
d. X = amount of time it takes Sam to write a report (minutes)
Calculate the standard deviation of X.
a. 494.5080
b. 417.9356
c. 390.9429
d. None of the other choices
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 1 images

Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON

The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman

Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman