In order to conduct research you must first identify the topic that interests you. This can be any topic on something that can be observed and measured within your environment. In order for the research to be quantitative the research must be data based, meaning that you must be mathematically measuring the data, and you must be analysing the relationship between variables with a statistical analysis.
Once you have identified your topic you must then form your hypothesis. A hypothesis is what you expect to happen within your experiment. For example if you are testing if a bell will make a dog bark you might believe that ringing the bell will cause the dog to bark. Therefore your hypothesis will be that there will be a positive correlation between the ringing of the bell and the dog barking. This will be stated as such because you think there is a strong relationship between the variable of the bell ringing and an increase in the dog barking in reaction to the bell.