STA630 Quiz January 2026

VU QUIZ REPORT

Subject: STA630

Quiz Completed: 1/7/2026, 10:45:19 PM Total Questions: 10

Which of the following would allow me to have the MOST control over environmental variables when conducting a research study?

1. Survey
2. True experimental design
3. Quasi-experimental design
4. Case study

Correct answer: True experimental design

Selected Answer: B

Which of the following measures of central tendency is referred as ‘the middle point of the data’?

1. Median
2. All of the given options
3. Mode
4. Mean

Correct answer: Median

The group that does not receive the treatment is called; A. None of the given options

B. Control group

C. Independent group D. Experimental group

Selected Answer: B

In frequency tables total of columns and rows are called: A. Area of table B. Body of table C. Cell of table

D. Marginal

Which of the following elements are not required for structuring Observation in Non reactive research?

1. Intensity
2. Frequency
3. Direction
4. Accretion

Correct answer: Accretion

Which of the following control techniques that is available to researcher, controls for both known and unknown variables?

1. Random assignment
2. Matching
3. Analysis of covariance
4. Building the extraneous variable into the design

Correct answer: Random assignment

Which of the following is more operational with the help of coding system?

1. External Appearance
2. Time Duration
3. Count Behaviors
4. Content analysis

Correct answer: Content analysis

In an experimental research study, the primary goal is to isolate and identify the effect produced by which of the following?

1. Independent variable
2. Extraneous variable
3. Dependent variable
4. Confounding variable

Correct answer: Independent variable

Threat to internal validity of an experiment arises because of a change in the measuring instrument between pretest and posttest, and not because of the instrument’s differential impact at the end, is termed as; A. Statistical Regression B. Maturation Effect

C. Instrumentation Effect

D. Testing Effect

Selected Answer: C

Control in experimental research is BEST described as an attempt to: A. Increase the generalize ability of findings B. Equate the subjects on the treatment variable C. Limit threats to external validity