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Codes, bear right, at the same time represent and grades of positions of question alternatives. From the point of view of the effectiveness of the preparatory Department for admission to College and obtaining a good knowledge, the rst position is more important than the second, and the second more important than the third. But the numerical value of alternatives allows us to assert that the first position is at least one-third greater than the second, and two-thirds than the third. The analysis of the responses to this scale is best done in the framework of the General proportions of the responses: the first alternative is said so much on the second one so much, etc. Interval scale is a fully ordered series of intervals between points. It allows for a more rigorous mathematical operations with the obtained information. However, the main difficulty lies in two points.-- It is not always possible certain social characteristics to measure the figures and especially to set a precise interval between them. Therefore, most of the interval scale is used for recording information clearly apparent quantitative methods of social characteristics, such as age, salary, education, work experience, etc.
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