edco 735
Liberty University
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Exam (elaborations)
Liberty University - EDCO 735 / EDCO735 QUIZ 2 4th attempt
EDCO 735 / EDCO735 QUIZ 2 
4th attempt 
 
 
 
Which of the following is NOT needed in the formula for calculating a confidence interval's upper limit? 
 
M 
 
 
 
SS 
 
tcritical SEM 
 
 
In order to calculate the sum of squared deviations you must: 
Correct Answer 
calculate the mean Correct Answer 
 
 
divide by degrees of freedom 
 
 
take the square root of the sum 
 
 
 
multiply each score by itself Warner - Section 2.4 
 
Variance: 
 
 
 
is a measure of dispersion 
 
 
tells us abo...
Exam (elaborations)
Liberty University - EDCO 735 / EDCO735 QUIZ 2 5th attempt
EDCO 735 / EDCO735 QUIZ 2 
5th attempt 
 
 
The difference between the population mean and the sample mean that arise just by chance rerepsents the: 
 
 
sampling error 
 
 
standard error 
 
 
magnitude of the difference 
 
 
prediction error 
 
 
 
Sampling error refers to: 
 
 
about how much we should expect our sample mean to be from the population mean 
 
 
about how much we should expect an individual score in our sample to be from the population mean 
 
 
the amount of error in our meas...