An Instructor Divided Her Class into Four Groups and Asked

question 39

Essay

An instructor divided her class into four groups and asked them to keep track of the number of soft drinks that they consume per week. The data has been ranked and the sums determined for each group.
The sums of the ranks for the four groups is as follows: R_A = 51.5 ;R_B = 48.5 ;R_C = 45.5 ;R_D = 64.5
Complete the Kruskal-Wallis test to determine if the hypothesis that the different groups consume the same amount of soft drinks per week is valid at α = 0.05.

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Definitions:

Information Processing Capabilities

Refers to the cognitive functions involved in processing, storing, and retrieving information, often likened to how computers process data.

Working Memory

A cognitive system responsible for temporarily holding and processing information, enabling activities such as reasoning, learning, and comprehension.

Rehearsal

The process of repeating to oneself the material that one is trying to remember.

Memory Organization

The way in which memories are structured, stored, and retrieved in the brain, often influencing how information is recalled.