Question

A physical education teacher is interested in comparing the effectiveness of three different methods (A vs. B vs. C) of teaching basketball skills to elementary school children. Since the children all differ in initial skill level, the teacher decides to categorize performance as “improved” or “not improved” following 3 weeks of exposure to one of the three methods. Sixty children are randomly assigned to one of the three methods (A vs. B. vs. C) and taught the method for 3 weeks. The results appear below:

                                                Method

                                    A           B            C

Improved                  10         18             12

Not Improved           10         2               8

Briefly describe why it would not be appropriate to put standard error bars on the Basketball skills graph?

basketba methods improved 11a trainin not improved 15- 10- method A method B method C method of basketball training

Answer 1

A viable explanation for not being able to apply standards error bar is that the all the student batches are subjected to individual experimentation but none of the individual batches are subjected to all the experiments, either, all the batches need to be subjected to every experiment A, B and C to determine the error bar.

Since the above was not done in the given experiment, standard error bar is inapplicable.