Which of the following are not true for ANCOVA ?

A. It uses partial correlation principles.

B. It transforms quasi-experiment into a true experiment.

C. It has two dependent variables.

D. It controls variance at analysis stage.

E. It controls variance at the time of structuring research design.

Choose the correct answer from the options given below:

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This question was previously asked in

UGC NET (Education) Official Paper-II (Held On: 14 Mar, 2023 Shift 1)

Answer 1

Key Points

ANCOVA does not transform a quasi-experiment into a true experiment. A quasi-experiment is a study in which the researcher does not have full control over the independent variable. For example, a researcher might be interested in the effect of a new teaching method on student achievement. However, the researcher cannot randomly assign students to different teaching methods. Instead, the researcher might have to use existing classes or schools as the different treatment groups. This means that there may be other factors, such as the quality of the teachers or the students' prior knowledge, that could also affect the results.
ANCOVA also does not have two dependent variables. ANCOVA is a statistical method that is used to compare the means of two or more groups on a single dependent variable, while controlling for the effects of one or more covariates.
ANCOVA does not control variance at the time of structuring research design. ANCOVA is a statistical method that is used to control for the effects of covariates at the analysis stage.
A and D are true for ANCOVA. ANCOVA uses partial correlation principles to control for the effects of covariates. ANCOVA also controls variance at the analysis stage.

Therefore the correct answer is B, C, and E.

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