Question
In: Statistics and Probability
If a Correlation matrix shows that the association between the IV - the percentage of residents...
If a Correlation matrix shows that the association between the IV - the percentage of residents of a state (in the US) who have graduated from high school and the DV - the percentage of murders committed with firearms in a state is -.271, with an associated sig. of .001, explain how you understand the relationship between the Independent variable and the Dependent variable.
Solutions
orchestra answered 2 years agoRelated Solutions
A state conducts a study that shows strong negative correlation between residents' life expectancy and number...
A state conducts a study that shows strong negative correlation
between residents' life expectancy and number of breweries within 2
miles of the residents. The state concludes that if they mandate a
decrease in the number of breweries life expectancy will go up.
Select all true statements and explain why.
A. The state's conclusion is correct as long as the correlation
measures strong linear association with no distorting outliers.
B. We can use this study to conclude that proximity to...
Using excel compute correlation coefficients, correlation matrix and test the significance of the correlation coefficients between...
Using excel compute correlation coefficients, correlation matrix
and test the significance of the correlation coefficients between
sales with price, sales with advertisments using alpha
0.05
Sales
Price
Adver
19.98
14.10
15.19
19.98
18.65
15.19
19.98
18.65
13.87
19.98
18.65
12.83
19.98
18.65
13.16
19.98
18.65
15.19
19.98
18.65
13.92
20.10
18.73
14.42
20.12
18.75
13.83
20.13
18.75
14.50
20.14
18.75
13.87
20.12
18.75
13.64
20.12
13.87
14.31
20.13
14.27
13.85
20.14
18.76
14.20
20.14
18.77
13.64
20.13
13.87
14.33
20.13
14.14...
1. correlation It is interested to investigate if there is an association between body weight and...
1. correlation
It is interested to investigate if there is an association
between body weight and the concentration of cholesterol in the
blood. Subjects were randomly selected from a population of adult
males between the ages of 50 and 55 with a height of between 60 and
69 inches in height. the data appears in the following table
weight (pounds)
X
cholesterol (mg/100 ml)
Y
146
181
205
228
157
182
165
249
184
259
153
201
220
339
181...
v(a) Using examples, outline the differences between correlation and causation. (b) The Excel correlation matrix below...
v(a) Using examples, outline the differences between correlation
and causation. (b) The Excel correlation matrix below shows
correlation coefficients between cheapest economy and business
class fares, flight times and flight distances for non-stop
round-trip flights in December 2019 to 12 medium- and long-haul
destinations from Manchester Airport (source: flights.google.com,
accessed 4th November 2019). Economy Fare Business Fare Time
Distance Economy Fare 1.000 Business Fare 0.854 1.000 Time 0.663
0.494 1.000 Distance 0.520 0.317 0.971 1.000 (i) Explain how this
correlation...
Suppose there is a linear association between crime rate and percentage of high school graduates. a)...
Suppose there is a linear association between crime rate and
percentage of high school graduates.
a) State the full and reduced model
b)Obtain SSE(F), SSE(R), df(F), fd(R), test statistics F for the
general linear test and decision rule.
crime rate, high school grad %
8487 74
8179 82
8362 81
8220 81
6246 87
9100 66
6561 68
5873 81
7993 74
7932 82
6491 75
6816 82
9639 78
4595 84
5037 82
4427 79
6226 78
10768 73...
Is there an association between hair color and body type? The table below shows the results...
Is there an association between hair color and body type? The
table below shows the results of a researcher's observations of
randomly selected people.
Frequencies of Hair Colors for Various Body Types
BlondeBrunetteRed Head
Short and Slender849958
Short and Pudgy7810272
Tall and Slender5010471
Tall and Heavy539361
What can be concluded at the αα = 0.10 significance level?
What is the correct statistical test to use?
Goodness-of-Fit
Paired t-test
Homogeneity
Independence
What are the null and alternative hypotheses?
H0:H0:
The distribution...
Question 7. The results of the correlation analysis in the Correlation Matrix these variables are depicted...
Question 7. The results of the correlation
analysis in the Correlation Matrix these variables
are depicted below. Use information in the table to discuss the
strength and nature of relationship between the four variables.
Training
Performance
Years of Service
Annual Salary
Training
1
Performance
0.016
1
Years of Service
0.377
-0.268
1
Annual Salary
0.597
0.709
0.286
1
Question 9. Results of the three goodness of
test measures is given in the table below:
Goodness of Fit Tests
R Square...
In baseball, is there a linear correlation between batting average and home run percentage? Let x...
In baseball, is there a linear correlation between batting
average and home run percentage? Let x represent the batting
average of a professional baseball player, and let y represent the
player's home run percentage (number of home runs per 100 times at
bat). A random sample of n = 7 professional baseball players gave
the following information.
x 0.255 0.251 0.286 0.263 0.268 0.339 0.299
y 1.5 3.9 5.5 3.8 3.5 7.3 5.0
(a) Make a scatter diagram of the...
In baseball, is there a linear correlation between batting average and home run percentage? Let x...
In baseball, is there a linear correlation between batting
average and home run percentage? Let x represent the
batting average of a professional baseball player, and let
y represent the player's home run percentage (number of
home runs per 100 times at bat). A random sample of n = 7
professional baseball players gave the following information.
x
0.249
0.245
0.286
0.263
0.268
0.339
0.299
y
1.7
3.2
5.5
3.8
3.5
7.3
5.0
(a) Make a scatter diagram of the...
In baseball, is there a linear correlation between batting average and home run percentage? Let x...
In baseball, is there a linear correlation between batting
average and home run percentage? Let x represent the
batting average of a professional baseball player, and let
yrepresent the player's home run percentage (number of
home runs per 100 times at bat). A random sample of n = 7
professional baseball players gave the following information.
x
0.253
0.247
0.286
0.263
0.268
0.339
0.299
y
1.1
3.9
5.5
3.8
3.5
7.3
5.0
a) Use a calculator to verify that Σx...
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