The ideal sample size is calculated by using the following formula:
(Z-score)2 x SD x (1-SD)/ME2 = Sample Size
Thus, small sample size which is this case very small (9 or less)
1. Reduces the confidence level of the study, which is related to the Z-score.
2. Decreasing the sample size also increases the margin of error.
Thus, these 2 reasons state why it is not appropriate to use statistical evaluation on the data obtained from task-based protocol and has a very small sample size.
Out of the numerous feasible mistakes, the random mistakes cannot be decided inside the everyday method of measurement. Such errors are treated mathematically. The mathematical analysis of the numerous measurements is called statistical evaluation of the statistics.
Learn more about formula here: brainly.com/question/1214333
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