Abstract
Inquiries, Investigations, and Immersion (III) is one of the subjects in Senior High School that aims to strengthen further the skills of the students in problem-solving and critical thinking through conducting researches in any type they want (whether qualitative, quantitative, or mixed). In this study, the researcher developed worksheets for quantitative data analysis and pilot tested it to fifty Grade 12 students in a certain integrated high school. Results showed that the utilization of developed and validated quantitative data analysis worksheets improves the performance of students in the experimental group as compared to the control group. Also, a significant difference in the gain scores of control and experimental groups was seen in which the gain score in the experimental group is equivalent to four times the gain score of the control group. Hence, the study concluded that the use of worksheets in teaching quantitative data analysis ensures the advancement of learning.
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