To reduce random error ? Which method is appropriate
Administer the treatment in the same way every time
Random errors in research can occur due to unpredictable changes in the experiment or environment which can affect the results. To minimize these random errors, it is crucial to ensure consistency in the methodology followed throughout the research process. Let's analyze the given options:
- Administer the treatment in the same way every time: This option helps in maintaining consistency and reduces random variations caused by changes in the execution of treatments. When treatments are administered identically each time, it minimizes the chances of random errors and ensures that the results are due to the variable of interest rather than extraneous factors.
- Administer manipulation checks: This ensures that the manipulation of the independent variable has the intended effect. While it helps in validating experimental manipulations, it doesn't directly address or reduce random errors.
- Select large sample size: A larger sample size is commonly used to reduce random errors and increase the precision of statistical estimates. However, in this context, maintaining consistency in treatment administration is more directly related to reducing random errors.
- Administer the test after a gap of one week: This might help in reducing test-retest reliability issues, but it doesn't specifically target the reduction of random errors.
Conclusion: The most appropriate method to reduce random errors is to administer the treatment in the same way every time. By ensuring that the treatment process is consistent, we minimize the variability that can arise from inconsistent execution.
Similar Questions
Match List I with List II
LIST I (Type of Evaluation) LIST II (Main Issue for Evaluation) A. Program/Intervention planning Evaluation I. Effectiveness of a program / Intervention B. Process/ monitoring Evaluation II. Need for a program/ Intervention C. Impact/Outcome Evaluation III. Efficiency of the service delivery D. Cost-effective Evaluation IV. Cost of delivering the service Choose the correct answer from the options given below:
Quasi-experiments are usually conducted in
When results obtained in a research study can be extended to a group larger than the sample (outside the context of the study) it is called
The research design is specifically related to which of the following features in research?
(i) Sample Selection
(ii) Formulation of a plan
(iii) Deciding about the tool for data collection
(iv) Hypothesis making
(v) Choice of a field of inquiry
Select your answer from the options given below:Match the type of validity with its major source of problem:
LIST 1 (Validity Type) LIST 2 (Description/Threat) (a) Construct validity (i) Faulty or poor measure, resulting in mislabeling/ misinterpreting behaviour (b) External Validity (iii) Sample of participants was not representative (c) Internal Validity (ii) Treatment and no-treatment groups were unequal before the study began One way to measure the extent to which a measure is free of random error is to compute its:
The components of a research design are:
(a) Comparison
(b) Control
(c) Reactivity
(d) Manipulation
(e) Non-representativeness
(f) Generalisation
Artifacts that arise and affect the internal validity in research are:
(a) History
(b) Randomisation
(c) Maturity
(d) Instrumentation
(e) Experimental mortality
(f) Matching
Important Questions from Research Design
Design used in experimental research in which groups are randomly formed and that controls most sources of invalidity is known as
‘Which of the following are the complete experimental research designs?
(A) Factorial design
(B) One group after-only design
(C) Before-after design with one experiment and two control groups
(D) Latin square design
(E) One-group before-after design
Choose the correct answer from the options given below:
The 'Age' of a respondent is an example of
The internal validity factor in research is related to the issue of
The post-test only control group design avoids:
