Question
In: Nursing
Why and where do we use dependent and independent variable?
- Why and where do we use dependent and independent variable?
Solutions
Expert Solution
A variable is a characteristic of a unit being observed that may assume more than one of a set of values to which numerical measure or a category from a classification can be assigned (e.g disease,age,weight etc).
An independent variables are variables that are manipulated or are changed by researchers and whose effects are measured and compared.The other name of independent variable is predictors or experimental variable.The dependent variable is the variable being tested and measured in an experiment,and is dependent on the independent variable.An example of a dependent variable is depression symptoms,which depends on the independent variable ( type of therapy)
The independent variable is the one the experiment controls.The dependent variable is the variable that changes in response to the independent variable.The two variables maybe related by cause and effect.If the independent variable changes,then the dependent variable is affected.It is used in scientific research,where we often want to study the effect of one variable on another one.
The independent variable always goes on the x- axis,or the horizontal axis.The dependent variable goes on the y- axis or vertical axis.
Nightingale answered 1 year agoRelated Solutions
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Group A Independent Variable ( X ) Dependent Variable ( Y ) Use of Facebook in...
Group A
Independent Variable ( X )
Dependent Variable ( Y )
Use of Facebook in work time
Performance from 1 - 10
The time is in Minutes
1
= poor 10 = Excellent
45
8
30
8
20
8
30
9
90
7
60
8
50
7
50
8
60
7
30
8
40
8
90
7
60
6
Group B
Independent Variable ( X )
Dependent Variable ( Y )
Use of Facebook in work time
Performance from...
Which variable should be the dependent variable and which should be the independent variable? Why? Plot...
Which variable should be the dependent variable and which
should be the independent variable? Why?
Plot the points on the scatterplot graph. NOTE: In a
scatterplot the x axis will always reflect 1, 2, 3… not the
Quarters specifically.
Label both axes with words.
In order to analyze the data we will
use the line of best fit.
Answer with 1-3 complete sentences. Does the line seem to fit
the data? Why?
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y-intercept to...
Identify the independent and dependent variable.
A researcher is studying relationship between speed of cycling and the presence of people. Formulate a relevant hypothesis and identify the independent and dependent variable.
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anger). A random sample of subjects has been taken from the
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The samples...
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Why do we use adjusted R2 instead of R2 in
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15. In an experiment, an independent variable is _______ and a dependent variable is _______. Group...
15. In an experiment, an independent variable is _______ and a
dependent variable is _______.
Group of answer choices
Manipulated, measured
Measured, manipulated
Discrete, summation
Continuous, manipulated
16. Outliers are
Group of answer choices
The lowest and highest scores in a data set
Extreme or unusual values
All options present
The lowest value in a data set
17. Assume that we have the following set of data:
Score
11, 12, 17, 18, 19, 20, 21, 22, 23, 24,...
Suppose we have the following data on variable X (independent) and variable Y (dependent): X Y...
Suppose we have the following data on variable X (independent)
and variable Y (dependent):
X
Y
2
70
0
70
4
130
a.) By hand, determine the simple regression equation relating Y
and X.
b.) Calculate the R-Square measure and interpret the result.
c.) Calculate the adjusted R-Square.
d.) Test to see whether X and Y are significantly related using
a test on the population correlation. Test this at the 0.05
level.
e.) Test to see whether X and Y...
Suppose we have the following data on variable X (independent) and variable Y (dependent): X Y...
Suppose we have the following data on variable X (independent)
and variable Y (dependent):
X Y
2 70
0 70
4 130
Test to see whether X and Y are significantly related using a
t-test on the slope of X. Test this at the 0.05 level.
Test to see whether X and Y are significantly related using an
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Suppose we have the following data on variable X (independent)
and variable Y (dependent):
X
Y
2
70
0
70
4
130
a.) By hand, determine the simple regression equation relating Y
and X.
b.) Calculate the R-Square measure and interpret the result.
c.) Calculate the adjusted R-Square.
d.) Test to see whether X and Y are significantly related using
a test on the population correlation. Test this at the 0.05
level.
e.) Test to see whether X and Y...
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