Experimental Design Quiz

In a two-group experimental design, what is the primary purpose of the control group?

In a single-group design (SGD), what is the independent variable in the example of fish meal as a supplement for mud crabs?

Which experimental design uses two control groups and two experimental groups?

In the example of the effectiveness of organic and inorganic fertilizer on tomato growth, what is the dependent variable?

Which experimental design compares groups that are exposed to the same independent variable, but at different levels?

What is the main characteristic of a parallel group design?

In the example of dishwashing liquid with or without water dilution, which design is being utilized?

What is a key difference between a two-group design and a parallel group design?

Which design would be most appropriate for studying the effect of different water temperatures on tilapia growth?

What is the primary difference between the Complete Randomized Design (CRD) and the Randomized Complete Block Design (RCBD)?

Which design would be most appropriate for investigating the relationship between the amount of supplemental feed given to tilapia and their final weight?

In a Pre-test Post-test group design, why is the control group isolated from experimental influence?

Which design is most likely used in a study comparing the effectiveness of two different brands of supplemental feed for increasing tilapia weight?

What's the primary purpose of randomization in research designs?

Which design would be most suitable for determining the relationship between the length and weight of tilapia after they are fed a specific type of supplemental feed?

Which research design involves measuring the dependent variable before and after the introduction of the independent variable?

What does the principle of timeliness ensure about a research design?

Which principle emphasizes the importance of obtaining results that can be applied to a wider population?

What is the primary function of a research design?

What is the principle of replication focused on?

Which research design principle directly addresses the consistency and dependability of research results?

Which principle is associated with minimizing bias and ensuring the research findings are clear and specific?

What is the primary concern of the principle of validity?

Which principle allows for refinement of a research design during the research process?

What is the primary advantage of probability sampling?

When is snowball sampling particularly useful?

Which sampling technique involves dividing the population into subgroups and then randomly selecting samples from each subgroup?

When would researchers choose to use cluster sampling?

What is a key characteristic of multi-stage sampling?

In which sampling method is the selection of elements based on a predetermined interval?

Which sampling technique is most likely to be used in a study of the effectiveness of a new medication for a rare disease?

Which of the following scenarios would most likely require the use of multi-stage sampling?

What is the most significant advantage of conducting a research study with a representative sample, rather than using the entire population?

Which of the following is NOT a benefit of utilizing a well-designed research plan?

Determine the appropriate sample size for a survey about oil price hikes in a community of 10,000 residents, if the desired margin of error is 5%.

What factor plays the most significant role in selecting a sampling technique?

Why is it essential to ensure that a sample accurately represents the population being studied?

Which of the following is a potential disadvantage of using a sample size that is too small?

What is the purpose of calculating the 'margin of error' when determining the sample size?

In the context of research design, what does the term 'sampling technique' refer to?

Which sampling technique is most appropriate when the researcher wants to ensure that various subgroups within the population are represented in the sample, but randomization is not used?

In which sampling technique does the researcher's judgment play a significant role in choosing participants?

A researcher studying the impact of a new medication on patients with a rare genetic disorder would likely use which sampling technique?

Which sampling technique is most likely to produce a biased sample because it relies on readily available individuals?

If a researcher wants to study the effectiveness of a new type of exercise program on weight loss, and they want to ensure that their sample includes individuals with different fitness levels, which sampling technique would be most appropriate?

Which sampling technique would be least suitable for conducting a survey about public opinion on a new government policy?

In the given context, the guidance counselor using a sample of 100 students out of 2000 to determine the average weekly allowance is an example of which sampling technique?

Which of the following is a characteristic of non-probability sampling?