MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Topic Video
Question
1
![1.
A study is performed to explore the relationship, if any, between 24-hour
urinary metabolite 3-methoxy-4-hydroxyphenylglycol (MHPG) levels and
depression in bipolar patients. The MHPG level is measured in micrograms
per 24 hours while the manic-depression (MD) scale used goes from 0
(manic delirium), through 5 (euthymic), up to 10 (depressive stupor). A par-
tial computer printout of regression analysis with MHPG as the independ-
ent variable follows:
Average MHPG = 1243.1 with SD = 384.9
Average MD = 5.4 with SD = 2.875
95% confidence interval for slope b, = (-.0096, -.0016)
%3D
(a) Calculate the slope of the regression line and interpret it in the context
of this problem.
(b) Find the equation of the regression line.
(c) Calculate and interpret the value of r2 in the context of this problem.
(d) What does the correlation say about causation in the context of this
problem.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9170f4fb-5a8e-438f-8fa0-bf1daa6952a5%2Ffdae6213-ffcd-4e2e-97a6-9d48e851549b%2Fvpl5ile_processed.png&w=3840&q=75)
Transcribed Image Text:1.
A study is performed to explore the relationship, if any, between 24-hour
urinary metabolite 3-methoxy-4-hydroxyphenylglycol (MHPG) levels and
depression in bipolar patients. The MHPG level is measured in micrograms
per 24 hours while the manic-depression (MD) scale used goes from 0
(manic delirium), through 5 (euthymic), up to 10 (depressive stupor). A par-
tial computer printout of regression analysis with MHPG as the independ-
ent variable follows:
Average MHPG = 1243.1 with SD = 384.9
Average MD = 5.4 with SD = 2.875
95% confidence interval for slope b, = (-.0096, -.0016)
%3D
(a) Calculate the slope of the regression line and interpret it in the context
of this problem.
(b) Find the equation of the regression line.
(c) Calculate and interpret the value of r2 in the context of this problem.
(d) What does the correlation say about causation in the context of this
problem.
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