10-Item Quiz on Statistics for the Behavioral & Social Sciences
How is the z-test different from z-score analysis? (Points : 1) |
The z-test compares a sample to a population.
The z-test calculates a value of z which can be compared to Table A.
The z-test provides a way to evaluate how individuals compare to a
population.
The z-test is based on how individual scores compare to a sample mean.
A one-sample t value is statistically significant in which situation? (Points : 1) |
The calculated t is equal to or larger than the table value.
The calculated t is equal to or smaller than the table value.
The calculated t is equal to or smaller than .05.
The calculated t is equal to or larger than .05.
What advantage does the one-sample t offer over the z-test? (Points : 1) |
The one sample t requires no parameter standard error of the mean.
The one sample t requires no parameter mean.
The one sample t requires no sample mean.
The one sample t doesn’t require interval scale data.
Consulting Table 3.1, what percentage of the distribution occurs below z = 1.0? (Points : 1) |
15.87%
34.13%
50%
84.13%
The Cohen’s d has an upper limit of 1.0. (Points : 1) |
True
False
What does Cohen’s d measure in the independent t-test? (Points : 1) |
Whether a result is a random outcome
The effect size of the result
The direction of the difference
The impact of the dependent variable
The z-test asks whether the population from which the sample was drawn has the same mean as the population to which it is compared. (Points : 1) |
True
False
Which of the following expressions is an indication of sampling error? (Points : 1) |
M =
m
x – M
s
M ≠ m_{M}
A type I decision error occurs in which of the following circumstances? (Points : 1) |
The decision not to proceed with an analysis
The decision to proceed when the analysis is flawed
Erroneously determining that a result is not significant
Erroneously determining that a result is significant
In a distribution for which the mean is 25 and the standard deviation is 5, what percentage of all scores occur at 30 or above? (Points : 1) |
15.87%
20%
34.13%
84.13%
Tutor Answer
Review from our student for this Answer
Brown University
1271 Tutors
California Institute of Technology
2131 Tutors
Carnegie Mellon University
982 Tutors
Columbia University
1256 Tutors
Dartmouth University
2113 Tutors
Emory University
2279 Tutors
Harvard University
599 Tutors
Massachusetts Institute of Technology
2319 Tutors
New York University
1645 Tutors
Notre Dam University
1911 Tutors
Oklahoma University
2122 Tutors
Pennsylvania State University
932 Tutors
Princeton University
1211 Tutors
Stanford University
983 Tutors
University of California
1282 Tutors
Oxford University
123 Tutors
Yale University
2325 Tutors