Question

Twenty third graders were randomly separated into four equal groups, and each group was taught a mathematical concept using a different teaching method. At the end of the teaching period, progress was measured by a unit test. From the data, answer the following questions. 1. What is the mean square error? a. 102.8 b. 194.9 c. 311.5 d. 201.9 2. What is the value of the F statistic in the analysis? a. 1.42 b. -2.87 c. 1.60 d. 9.87 3. What type of design was used in the study? a. randomized block b. factorial c. completely randomized d. Latin square

Answer 1

Ans 3 (c) completely randomized

Here we have 4 groups on which we apply 4 different technique (i.e. treatment) so we are only testing the technique. So completely randomized design is used in the study.

It cannot be randomized block design because there is no homogeneous block.