18 Questions
Which of the following best defines a point-estimate in psychometrics?
The score obtained from a test
What does a confidence interval reflect?
A range of values likely to contain the true score
What can be calculated using the standard error of measurement?
The range of values likely to contain the true score
Which of the following best describes the standard error of measurement?
It reflects the amount of error around a point estimate in standard deviation form
Which formula is used to calculate the standard error of measurement?
se_m = SO * sqrt(1-RXX)
What confidence interval should be used for university exams
75%
Which type of correlation is not compromised by measurement error?
True score correlation
What is the maximum correlation between two sets of scores based on observed score correlation?
1.0
Which type of correlation is compromised by measurement error?
Observed score correlation
How can you estimate the true score correlation?
By knowing the reliabilities associated with the scores
What is the formula used to estimate the theoretical correlation between two variables based on their respective reliabilities?
rmax
What does the correction for attenuation formula represent?
The ratio of the observed correlation to the square root of the product of the reliabilities
What is the maximum possible correlation between two variables based on their respective reliabilities?
r_max=√(R_xx R_yy)
What is the minimum correlation value required for exploratory research according to Nunnally's correction for attenuation formula?
.70 or higher
What is the minimum correlation value required for basic research according to Nunnally's correction for attenuation formula?
.80 or higher
What is the minimum correlation value required for applied cases according to Nunnally's correction for attenuation formula?
.90 or even .95 or higher
Which of the following should be true before applying the correction for attenuation formula?
The correlation should be statistically significant
What is the purpose of the correction for attenuation formula?
To estimate the true correlation between two variables
Test your knowledge of standard error of measurement and confidence intervals with this quiz. Learn about the concepts and how to calculate them in psychometrics.
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