Question
Statistical regression in experiments is the tendency forresearch participants who are near the 50th percentile on the pretest to show smaller gains on the posttest than research participants between the 1st and 20th percentiles.research participants who are at the 95th or higher percentile on the pretest to show smaller gains on the posttest than research participants who are near the 50th percentile on the pretest.the posttest to have lower validity for research participants in the control group than for research participants in the experimental group.analysis of covariance to over-estimate
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Question
Correlational research has the limitation thatonly paper-and-pencil instruments can be used to measure the variables of interest.it is not possible to form samples by randomly selecting individuals from a defined population.correlational statistics can be used for prediction but not for explanation.correlational results cannot demonstrate definitively whether two variables are causally related to each other.Top AnswerView the full answer
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Question
The primary difference between correlational and group-comparison research designs is that correlational research
designs
| cannot be used to predict matters of interest to educators |
| cannot provide descriptions of samples’ score descriptions. |
| are more similar to experiments in their sampling procedures. |
typically involve the measurement of more values of variables. Top AnswerView the full answer
|
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Question
Each data point in a scattergram representsthe score of one individual on one variable.the scores of one individual on two variables.the reliability of an individual’s scores for two variables.the mean scores of a sample on two variables.Top AnswerView the full answer
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