Access Millions of academic & study documents

Psy 315 Chapter#11 - 12

Content type
User Generated
Type
Homework
Showing Page:
1/2
W e e k 5 P a g e | 1
12. For problems 12 to 14, do the following: (a) Make a scatter diagram of the scores; (b)
describe in words the general pattern of correlation, if any; (c) figure the correlation coefficient;
(d) figure whether the correlation is statistically significant (use the .05 significance level, two-
tailed); (e) explain the logic of what you have done, writing as if you are speaking to someone
who has never heard of correlation (but who does understand the mean, deviation scores, and
hypothesis testing); and (f) give three logically possible directions of causality, indicating for
each direction whether it is a reasonable explanation for the correlation in light of the variables
involved (and why).
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
A.
B.. The plot above shows a strong negative correlation, and is either linear or curvilinear. As
anxiety levels increase, so dexterity decreases.

Sign up to view the full document!

lock_open Sign Up
Showing Page:
2/2

Sign up to view the full document!

lock_open Sign Up
Unformatted Attachment Preview
12. For problems 12 to 14, do the following: (a) Make a scatter diagram of the scores; (b) describe in words the general pattern of correlation, if any; (c) figure the correlation coefficient; (d) figure whether the correlation is statistically significant (use the .05 significance level, two-tailed); (e) explain the logic of what you have done, writing as if you are speaking to someone who has never heard of correlation (but who does understand the mean, deviation scores, and hypothesis testing); and (f) give three logically possible directions of causality, indicating for each direction whet ...
Purchase document to see full attachment
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.
Studypool
4.7
Indeed
4.5
Sitejabber
4.4