Listed Below Are Grade Averages for Randomly Selected Students with Three

question 21

Essay

Listed below are grade averages for randomly selected students with three different categories of high-school
background. At the 0.05 level of significance, test the claim that the three groups have the same median grade
average.

---

Definitions:

Records

A collection of related pieces of information stored in a structured format, often in a database.

Self Join

A type of SQL join where a table is joined to itself, allowing for comparisons within the same table.

One-To-One Relationship

In database design, a type of relationship where a record in one table is linked to only one record in another table, and vice versa.

Single-Match Query

A type of database search that looks for only one specific match to the query criteria.