Question

(KNNL5 15.8) Three high schools participated in a study to evaluate the effectiveness of a new computer- based math curriculum. In each school, four 24-student sections of freshman algebra were available for the study. The two types of instruction (standard curriculum, computer-based curriculum) were randomly as signed to the four sections in each of the three schools. At the end of the term, a standard math achievement test was given to each of the 24 students in each section. A Is this study experimental, observational, or mixed experimental and observational? Why? B Identify all factors, factor levels, and factor-level combinations. C What type of study design is being implemented here? D What is the basic experimental unit of the study?

Answer 1

Solution :

In view of the given data : -

Number of High schools = 3

Concentrate objective: to assess the viability of another PC based arithmetic curiculum.

Number of understudies: Each school 4 areas x 24 understudies = 96 understudies x 3 schools = 288 understudies

Two kinds of directions = Standard and Computer-based

Institutionalized math test was given to the 24 understudies in each area.

an) Is this an exploratory, perception or blended examination?

This is an observational investigation

b) What is the essential variable of intrigue (the reaction variable)?

The reaction variable is score or review in institutionalized science test

c) What are the illustrative factors? Distinguish all dimensions of the logical factors (factor levels) if fitting.:

Factor (treatment): The variable that is changed and results are watched

Explantory factors are: Standard Instructions and Computer-based Instructions

Level: An esteem appointed to change the factor.

d) Identify all blends of the illustrative factors.

All blends of the explantory factors are: Standard Instructions, Computer-based Instructions, Standard Instructions and Computer-based Instructions