false

Class Notes
(838,765)

Canada
(511,085)

University of Saskatchewan
(2,987)

Sociology
(204)

SOC 325
(8)

Lecture

Unlock Document

Sociology

SOC 325

Elizabeth Quinlan

Winter

Description

Soc 325
March 17 2014
1
Questions that more than 40% of the class got wrong on midterm:
• Question 24: the central problem in the case of one sample hypothesis test is to
determine
a. If the sample is random
b. If the sample statistics are the same as those of the sampling distribution
c. If the parameters are representative of population
d. If a sample came from a population with a certain characteristic (found on
page 210)
• Question 42: based on the output below, what would you say about the difference
in the usual hourly wages of employees in the ten Canadian provinces
a. There is no difference between the usual hourly wages of employees in the
10 Canadian provinces
b. New Brunswickers earn statistically significantly less than employs in
other provinces
c. Albertans ear statistically significantly more than employees in other
provinces
d. None of the above (all we can say is there is a difference)
• Question 22: in a one-tailed t-test of two sample meals with a alpha of (0.10) what
is the z(critical) value
a. + 1.64
b. + 1.28 (tableAcolumn C)
c. + 0.03
d. + 2.58
Chapter 12: Measures of strength of an association for ordinal variables
Gamma, Kendall's tau-b and tau-c for "collapsed" ordinals
• Advantage of Gamma - PRE interpretation, downside is it can over exaggerate the
measure
Logic is based on ordering of pairs of cases (see page 335)
• Instead of calculating understand the logic
2 types of ordinal variables --> different measures of association
Continuous Ordinal Variables
• Spearman's rho, r s is a measure of association of two 'continuous' ordinal
variables
a. Measures both strength and direction of the relationship
b.
Ranges from 0 (no association) to ± 1.00 (perfect association)
• It won't happen
c. Is symmetrical measure
• Order of dependent and independent variables does not
matter, will still get the same value for interpretation
• Logic is slightly different from ordering pairs of cases,
similar and dissimilar (pg 360)
d. Only when the value of Spearman's rho is squared do we have a PRE
interpretation (rs)
e. Example: Soc 325
March 17 2014
2
• The number of friends a person is hypothesized to have a
positive effect on his/her quality of life
• Given the data below, how strong is the relationship between the
two variables?
Respondent No. of friends Quality of life
1 5 7
2 9 10
3 7 6
4 3 5
5 1 3
6 10 10
7 4 5
8 15 8
9 6 9
10 3 6
11 5 7
6∑ d 2
rs=1− 2
n(n −1)
f. The computer value of + 0.84 indicates that there is a very strong and
positive relationship between these two variables
g. We square 0.84 = 0.71. So, we can say "we make 71% fewer errors in
predicting quality of life with knowledge of number of friends"
Nominal: measures indicate Collapsed Ordinal: measures indicate strength
strength of relation but not and direction of relationship
direction
Phil: 2 category variables Gamma: has a PRE interpretation
Cramers V: variables with any Kendal's Tau-b and Tau-c :has no PRE
number of categories interpretation, but does not exaggerate strength of
Lambda: has a PRE interpretation as

More
Less
Related notes for SOC 325

Join OneClass

Access over 10 million pages of study

documents for 1.3 million courses.

Sign up

Join to view

Continue

Continue
OR

By registering, I agree to the
Terms
and
Privacy Policies

Already have an account?
Log in

Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.