Final answer:
The question deals with statistics and data analysis within the context of Mathematics at the High School level, involving frequency distribution and data interpretation.
Step-by-step explanation:
The subject of this question is Mathematics, specifically statistics and data analysis. The table with pairs of words and data, such as 20 corresponding to 40, and 30 to 50, suggests analyzing frequency of certain values or perhaps creating a frequency distribution. For example, using the provided frequency information, we could summarize the responses of twenty students on how many hours they worked per day into a frequency table. In such a table, each unique number of hours worked would correspond to how many students reported working that many hours, making it easier to visualize and interpret data.