Compute for the mean of each of the following sets of data. 1. The grades of a student on 8 examinations were: 85, 90, 88, 75, 69, 92, 78, 84. 2. Grades of a student for the first quarter. Subjects Grades No. of Units Science 88 5 English 81 3 Social Studies 79 3 Math 82 3 PE 85A. Answer the following question 1. Differentiate objective from subjective method of data collection. 2. Give 5 examples each for primary and secondary data. 3. Which do you think is the best method of presenting data? Explain vour answer