Discuss the considerations that determine the selection of a suitable average. Explain by giving one example of each case.
Answers
Answer:
In a between-subjects experiment, each participant is tested in only one condition. For example, a researcher with a sample of 100university students might assign half of them to write about a traumatic event and the other half write about a neutral event. Or a researcher with a sample of 60 people with severe agoraphobia (fear of open spaces) might assign 20 of them to receive each of three different treatments for that disorder. It is essential in a between-subjects experiment that the researcher assign participants to conditions so that the different groups are, on average, highly similar to each other. Those in a trauma condition and a neutral condition, for example, should include a similar proportion of men and women, and they should have similar average intelligence quotients (IQs), similar average levels of motivation, similar average numbers of health problems, and so on. This matching is a matter of controlling these extraneous participant variables across conditions so that they do not become confounding variables.
Answer:
Explanation:
Average is a simple term with lots of meaning.Average is term that determine in every case in multiplying , Adding, grouping of given set of data. It change or replace with every existing data. Average is to understand set of representative data.
- Arithmetic Mean
The arithmetic mean is the most common type of average.
It just to add all the given data and divided by number of data
average = Sum / number
2. Median
The median is the item of middle of data. The median solve the problem by taking the number in the middle of the sorted data. But in the Even numbers of data is there then there's 2 median. To get average data every time you need to sort the list first.
3. Mode
Mode is work just like voting , it given the data or number of choices is in majority. Its very simple to understand. It gives choice that the most people wanted.
4.Geometric mean
It help to find typical element when items are multiplied. It help to find Volume,Are, Inflation Rates etc
5. Harmonic Mean
Its very useful method but difficult to visualize.
Average rates = Total output / total input