Question

regression or correlation analysis if determining the relationship
between the time it took to hold a breath and the change in
breathing rate as a result of breath holding after a maximal
inhale?

What would be the independent variable if regression?
Dependent variable?

Answer #1

Dependent variable :Change in breathing rate

Independent varaiable: Breath hold time after maximum inhale

General rules of regression:

In regression Dependent variable is Y and it should be continuous.

Independent variable can be both categorical or continuous but in numerical.

Here dependent variable is unknown which is change in breathrate. So using independent variable we try to predict dependent variable.

Independent variable values can be collected using experiments like take random persons and measure breath hold time of each person. Since we have already a train set we can predict with that data.

Breath hold time increases there might be increase or decrease in breathing rate

Which of the following statements concerning regression and
correlation analysis is/are true?
A. If the correlation coefficient is zero, then there is no linear
relationship between the two variables.
B. A negative value for the correlation coefficient indicates that
high values of the independent variable are correlated with low
values of the dependent variable.
C. The slope coefficient for a simple linear regression model
measures the expected change in the independent variable for a unit
change in the dependent variable....

In regression analysis, a higher correlation between the
dependent variable and the independent variable indicates a higher
estimated slope.

1.What is the relationship between covariance
analysis, correlation analysis and linear regression
analysis?
2. What is the difference between covariance, correlation and
linear regression analysis?

Correlation is a visual method for determining the relationship
between two variables... including linear, curve linear, strong,
weak, positive, negative, and no relationships. The correlation
coefficient is a mathematical reflection of that relationship.
Regression analysis is the same thing as the correlation
coefficient. True or False

I am trying to put together a research determining the
relationship between age and exercise time and if there is a
significant difference in gender and exercise times. I would like
to determine the dependent variable normality using SPSS. Gender is
always independent, but when I'm trying to assess the normality for
the age and exercise times. Exercise will always be dependent, but
will in this case is age also dependent or independent? How would I
determine this on SPSS?

A regression analysis is a statistical assessment of the
association between two variables, one of which is dependent and
the other, independent. The dependent variable is y and the
independent variable is x. Regression analysis is used to find the
relationships between these variables. Variables within a
regression analysis can be negatively correlated or positively
correlated.
A situation in which one could model a regression analysis could
be the association of hours studied and a grade on a test. The...

Correlation and regression are concerned with:
a. the relationship between two
qualitative variables
b. the relationship between two
quantitative variables
c. the relationship between a
qualitative and quantitative variable
d. none of the above
e. all of the above

I am trying to put together a research determining the
relationship between age and exercise time and if there is a
significant difference in gender and exercise times. How would I
find the dependent variable normality using SPSS

Regression ____ (b values) indicate how much influence each
independent variable has on the dependent variable.
Regression analysis serves two main purposes: to define the
relationship between variables and to ____ values of the dependent
variable using what we know about the existing correlation between
the variables.
The coefficient of multiple determination, R^2, is interpreted
as the percentage of ____ in the dependent variable that is
explained by the independent variable.

The authors of a paper presented a correlation analysis to
investigate the relationship between maximal lactate level
x and muscular endurance y. The accompanying data
was read from a plot in the paper.
x
410
740
770
790
850
1035
1210
1240
1290
1390
1475
1480
1505
2200
y
3.80
3.90
4.80
5.30
3.90
3.40
6.40
6.88
7.55
4.95
7.90
4.45
6.50
8.90
Sxx = 2,619,073.214, Syy
= 39.4021, Sxy = 7632.018. A scatter plot shows
a linear pattern.
(a)...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 55 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago

asked 4 hours ago

asked 4 hours ago

asked 4 hours ago

asked 4 hours ago

asked 4 hours ago