STATISTICAL TECHNIQUES AND TOOLS
INTRODUCTION OF STATISTICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Nominal
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Ordinal
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Interval
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Ratio . In contrast to classification, the labels provide enough information to order objects.
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Detailed explanation-1: -Ordinal operates off rankings or ratings, but the distances between differences do not have a relative degree. It is the data that comprises of categories that can be rank ordered.
Detailed explanation-2: -Ordinal data have at least three categories that have a natural rank order. The categories are ranked, but the differences between ranks may not be equal. These data indicate the order of values but not the degree of difference between them. For example, first, second, and third places in a race are ordinal data.
Detailed explanation-3: -Abstract: Differently from the regular classification task, in ordinal classification there is an order in the classes. As a consequence not all classification errors matter the same: a predicted class close to the groundtruth one is better than predicting a farther away class.
Detailed explanation-4: -Ordinal regression (also called ordinal classification), describes the task of predicting labels on an ordinal scale. Here, a ranking rule or classifier maps each object x i ∈ X into an ordered set h : X → Y, where. ≺ r K