Your research team has been tasked with finding the correlation
of the following scenario:
Four research participants take a test of manual dexterity (high
scores mean better dexterity) and an anxiety test (high scores mean
more anxiety). The scores are as follows:
Person
Dexterity
Anxiety
1
1
10
2
1
8
3
2
4
4
4 -2
Describe the process your research team would go through by
completing the following:
Create a scatter diagram of the scores.
Describe in words...
If Data A has a correlation coefficient of r = -0.991, and Data
B has a correlation coefficient of r = 0.991, which correlation is
correct?
Select one:
a. Data A and Data B have the same strength in linear
correlation.
b. Data A has a weaker linear correlation than Data B.
c. Data A has a stronger linear correlation than Data B.
Clear my choice
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The...
For the following data (a) display the data in a scatter plot,
(b) calculate the correlation coefficient r, and (c) make a
conclusion about the type of correlation. The ages (in years) of 6
children and the number of words in their vocabulary Age, x 1 2 3
4 5 6
Vocabulary size, y 150 1100 1150 1800 2050 2700
A] The correlation coefficient r is
Write a research on the following topic
Topic: COMMUNICATION PROBLEM
REQUIRED: Structure of research
1. Introduction
2. Why choose this topic
3. Research objective
4. Literature review
5. Conclusion
What is a) the highest possible correlation coefficient? b) The
lowest? c) What does a correlation coefficient of -1.0 mean? d)
What does a correlation coefficient of 0 mean? Please Show
Steps.
Correlational Research
A)Strength of correlation: correlation coefficient Explain what
it is. Use an example.
The statistic has a value from 0 to 1: 0 = no relationship
between 2 variables > .3, a significant relationship > .5, a
strong relationship
b)Weakness of correlational research Explain how correlational
research only describes relationships between variables. It can’t
be used to test for cause and effect. Correlation doesn’t imply
causation, only co-occurrence.
what are the difference between experimental research and
correlation research
essay on difference between experimental research and correlation
research
A research studied the correlation between physical
characteristics of sisters and brothers. Here are data on the
heights (in inches) of 11 adult pairs.
Brother
71
69
66
67
70
71
70
73
72
65
66
Sister
69
63
65
63
65
62
65
64
66
59
62
a) Find the correlation and the equation of the least squares
line for predicting sister’s height from brother’s height.
b) Carlos is 72 inches tall. Predict the height of his
sister.
c)...
Problem Set 1: Pearson Correlation Coefficient
Analysis
Research Scenario: A clinical psychologist
would like to determine whether there is a relationship between
observer ratings of children’s externalizing behaviors and scores
on an established diagnostic interview assessing externalizing
disorders (like ADHD, CD, etc.). He administers the diagnostic
interview to 25 children and records these scores. He then trains
an observer to independently rate carefully-defined externalizing
behaviors for each of the 25 children. These scores are totaled for
an overall “externalizing behavior...
You are shown the following data. If the correlation
coefficient between the combined portfolio of A+B and C is 0.2,
what would happen to the overall volatility of the new portfolio if
we invested 50% in A+B and the remaining 50% in C? You could
potentially avoid computations.
Stocks
Volatility
%
Portfolio invested
Average Return
A and B
27
50
15
C
32
50
18
Volatility will lie somewhere between 32% and 40%.
Volatility will lie somewhere between 27% and...