For example, a guy notices that his shower is covered in a strange green slime. His friend tells him that coconut juice will get rid of it. he decides to check this out by spraying half of the shower with coconut juice and other half with water after 3 days no change on either sides of the shower.
The initial observation in that story would be that "the shower is covered in a strange green slime."
Initial observation is the first observation you make. For example, you notice something and wonder why it happens or you see something and wonder what causes it. You want to know how or why something works. It lead to gathering as much information as possible concerning it.
The initial observation sets the scene for an experiment...what did you see? what was happening? How to improve it? And so on. As the experiment proceeds you record all observations..what do you see?...what is happening? Etc. At the end you note the final observations and how do they differ from the initial observations. So, Initial observation is the observations you made initially of an experiment.
Quantitative observation means that your description of what you observedincludes a definite number that you measured.For example:"I saw a really big guy." is not a quantitative observation."I saw a guy who is 8 feet tall." is a quantitative observation.
i not understand and what mean contributory? my father death.
a theory which is made by observation