THE IMPORTANCE OF WRITING A GOOD HYPOTHESIS
A dissertation hypothesis is a prediction statement that is based on the theory you have come up with while preparing to conduct your research. As a rule, they are tested by doctoral candidates in their assignments that they prepare in order to have an ability to successfully graduate.
There are several types of hypotheses:
- research hypotheses (or alternative hypotheses) are based on your research that predicts a relationship;
- null hypotheses claim that the relationship that you have to prove in the research hypothesis does not exist, and balance your findings;
- one-tailed hypotheses clarify a direction (increase/decrease);
- two-tailed hypotheses do not clarify a direction, just a change.
It is necessary to compose your hypothesis for dissertation before you start looking for appropriate information, and analyze it afterward. Basically, it starts with the questions and assumptions you want to test out by collecting and analyzing data, conducting your research.
This part of work is effective when it is brief and clear, which means that it does not tiptoe around a chosen topic and emphasizes the key point right away. In a nutshell, it has to be closely related to the key problem of your work and present the findings of the future research. It is clear that the hypothesis formulation is one of the most important parts of your assignment, and, therefore, creating a successful one takes quite a lot of time and effort.
HOW TO MAKE UP A GREAT HYPOTHESIS?
Conducting research is an essential part of every student's academic career. Thus, when it comes to completing such difficult and bulky assignments like thesis or dissertations, you should have a good knowledge of how to carry out them easily in terms of proper structure, well-researched materials, accurately analyzed data, formatting, etc. Among all the parts composing a project, particular attention should be paid to a hypothesis. Though it is regarded to as an optional chapter of your paper, its inclusion is a great plus which affects the final score noticeably.
To develop good hypotheses, keep in mind the following recommendations:
- First of all, you should know hypotheses are applicable for quantitative research only, since quantitative research, contrary to the qualitative one, which is focused on human experiences, for the most part, can be tested.
- It is necessary to establish the relationship between the hypothesis and the objectives of your paper. Make sure your main claim is not ambiguous, but directly linked to the project’s aim, objectives, research question, and clearly conveys your thoughts.
- Make sure that your assumption is realistic and verifiable. Therefore, before formulating your central claim, think of the instruments for collecting data and methods for their crunching, operationalizing variables. In case you have a thorough understanding of how to carry out the measurement of these variables and know how to convert them into numbers, you can proceed to the formulation of the claim.
- Also, it is worth nothing that the inclusion of both null and alternative hypotheses are obligatory. You should know that there is not always a relationship between variables you are going to consider. Therefore, hypotheses have to be paired: the null one is concerned with the existence of the relationship and the alternative one with its absence.
- Keep in mind that it has to be clear and concise. Since it is simply a statement that you are going to assert, it should not be too lengthy and descriptive. At the same time, although it takes one or two sentences only, it has to be properly structured and articulated.
- Writing hypothesis for dissertation, be careful with appropriate word choice. Since you main claim is not proven yet, you cannot use the word “prove” here. Therefore, think of replacing it with words "support" or "suggest" which will point out you are familiar with the appropriate academic writing style.
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Step 5: Hypothesis Statement
(will be worked on in class prior to due date)
Your hypothesis statement will be turned in during science class, reviewed by the teacher and returned. Below is a short explanation of a hypothesis statement and some examples of hypothesis statements.
Hypothesis statement--a prediction that can be tested or an educated guess.
In a hypothesis statement, students make a prediction about what they think will happen or is happening in their experiment. They try to answer their question or problem.
Question: Why do leaves change colors in the fall?
Hypothesis: I think that leaves change colors in the fall because they are not being exposed to as much sunlight.
Hypothesis: Bacterial growth may be affected by temperature.
Hypothesis: Chocolate may cause pimples
All of these are examples of hypotheses because they use the tentative word "may." However, their form in not particularly useful. Using the word does not suggest how you would go about proving it. If these statements had not been written carefully, they may not have been a hypotheses at all.
A better way to write a hypotheses is to use a formalized hypotheses
Example: If skin cancer is related to ultraviolet light, then people with a high exposure to uv light will have a higher frequency of skin cancer.
Example: If leaf color change is related to temperature, then exposing plants to low temperatures will result in changes in leaf color.
Example: If the rate of photosynthesis is related to wave lengths of light, then exposing a plant to different colors of light will produce different amounts of oxygen.
Example: If the volume of a gas is related to temperature, then increasing the temperature will increase the volume.
These examples contain the words, if and then. Formalized hypotheses contain two variables. One is "independent" and the other is "dependent." The independent variable is the one you, the scientist control and the dependent variable is the one that you observe and/or measure the results.
The ultimate value of a formalized hypotheses is it forces us to think about what results we should look for in an experiment.
Example: If the diffusion rate (dependent variable) through a membrane is related to molecular size (independent variable), then the smaller the molecule the faster it will pass through the membrane.