a) Compute the correlation coefficient relating introversion and shyness scores. b) Find the regression equation which predicts introversion from shyness. c) What introversion score would you predict from a shyness score of 7?
a) Compute the correlation coefficient relating introversion and shyness scores. b) Find the regression equation which predicts introversion from shyness. c) What introversion score would you predict from a shyness score of 7?
MATLAB: An Introduction with Applications
6th Edition
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Author:Amos Gilat
Publisher:Amos Gilat
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Related questions
Question

Transcribed Image Text:Q1. A psychologist conducted a study on the relationship between introversion and shyness. The values
are results for scales of introversion and shyness. High positive scores on each scale indicate high
introversion or shyness; and high negative scores indicate low introversion or shyness. Data collected
from 10 people as follows:
X₁
X₂
X3
X4
X5
**
Q2. Given the following correlation matrix:
X₁
-.11**
.31***
.14**
.13**
Statistical Methods II PSYC 2022 O
ASSIGNMENT #3
Due April 8, 2023, 11:59 pm
X₂
a) Compute the correlation coefficient relating introversion and shyness scores.
b) Find the regression equation which predicts introversion from shyness.
c) What introversion score would you predict from a shyness score of 7?
-.20***
-.31***
-.27***
***
Introversion
4
-7
-1
0
6
7
-4
-9
-5
8
p<.001
X3
Shyness
11
-7
.44***
.49***
-1
X4
-3
0
7
-1
-8
-1
5
.42***
p<.01
a) Which is the best predictor of X3?
b) Which is the stronger correlation - 713 or 124?
c)
What is the proportion of variance in X₁ explained by each predictor?
X5
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