Which of the following does not belong to the group?Question 1Answera.CUME_DISTb.RATIO_TO_REPORTc.DENSE_RANKd.PERCENT_RANK

To determine which option does not belong to the group, let's analyze each choice based on their definitions and usage in statistics.

1. CUME_DIST: This function calculates the cumulative distribution of a value in a set of values. It indicates the proportion of values that fall below or equal to a certain value in the dataset.

2. RATIO_TO_REPORT: This function computes the ratio of a value to the sum of a set of values. It is often used in reporting metrics that require proportional comparisons.

3. DENSE_RANK: This function assigns ranks to rows within a partition of a dataset, with no gaps in ranking values if there are ties. For instance, if two values are tied for second place, the next rank assigned will still be 3.

4. PERCENT_RANK: This function calculates the rank of a value as a percentage of the total number of values in the set. Similar to CUME_DIST, it also provides insights into the relative standing of a value but expresses it as a percentage.

Analysis:

• CUME_DIST, DENSE_RANK, and PERCENT_RANK are all functions used primarily to analyze the distribution of data and ranking in statistical contexts.

• RATIO_TO_REPORT, on the other hand, is distinct as it focuses more on conceptualizing proportions in terms of other values rather than ranking or distribution.

Conclusion:

Based on this analysis, RATIO_TO_REPORT does not belong to the group as it fundamentally serves a different conceptual purpose compared to the others, which all relate directly to ranking and distribution of data values.

Final Answer:

b. RATIO_TO_REPORT