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Hypothesis Testing
STATS EXAM 2
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Terms in this set (22)
When conducting a t-test, where do I want my t score to fall?
t < -1.96 or t> 1.96
All types of t-test compare:
means
According to our data, which of the following is a good example of an INDIRECT relationship?
a. engine size and horsepower
b. price and horsepower
c. horsepower and gas mileage
d. horepeower and gas tank capacity
c. horsepower and gas mileage
What is the maximum number of groups that can be compared by a t-test?
2
Which of the following is a non-directional research hypothesis?
a. there is a significant difference between the scores of Test 1 and Test 2
b. there is no significant difference between the scores of test 1 and test 2
c. test scores dropped significantly between Test 1 and Test 2
d. test scores increased significantly between Test 1 and Test 2
...
Which of the following t-values would indicate a significant difference?
a. t=.03
b. t=-.97
c. t=-2.05
d. t=1.55
t= -2.05
____________ is the group you are testing, which has been pooled from the ____________ you are generalizing about?
sample, population
In the relationship between ice cream sales and violent crime, temperature is a:
covariate
What type of r value would we expect from the relationship between level of education and student loan debt?
r=.75
A correlation with a CORRELATION coefficient of -.82 would indicate a:
strong indirect relationship
If i wanted to examine the difference in IQs between men and women, what type of t-test would I run?
Independent samples t-test
If I wanted to examine how smart our class was compared to the average HBU student, what type of t-test would I run?
one sample t-test
If I wanted to examine students' IQs when they entered HBU as freshman and left HBU as graduates to see the difference, what type of t-test would I use?
paired samples t-test
Which of the following is TRUE about t-tests?
a. a small difference can be significant
b. a large difference is not necessarily significant
c. they consider the size of both groups
d. all of the above
all of the above
T/F Correlation does not equal causation
True
According to standard we set in class, which of the following p-values would indicate a significant correlation?
a. p=.89
b. p=.53
c. p=.16
d. p=.04
p=.04
T/F: A hypothesis is a question
false
What is the letter we use for the correlation coefficient?
r
What is the letter we use for the multiple correlation coefficient?
R
What is the most important duty of a behavioral science researcher?
protecting the rights of participants
Which ethical approach to research is characterized by the principle that there are no concrete moral codes?
ethical skepticism
T/F: When analyzing t-test results, a large difference is always significant.
False
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