Work for the following problems: A statistics instructor at Dalandanan National High School would like to examine the relationship if any) between the number of optional homework problems students do during the semester and their final course grade. She randomly selects 12 studenta for study and aska them to keep track of the number of these problemn completed during the course of the sementer. At the end of the class each student's total is recorded along with their final grade. The data follow in Table 1. No, of Problem Solved (x) 51 S8 62 65 68 76 77 78 Final Course Grade y) 62 68 66 66 67 72 73 72 78 73 76 75 848 xy 78 84 85 91 873 1. Identify the dependent variable. 2. What is the independent variable? 3. Compute for the correlation of coefficient. 4. Classify the direction and atrength of the correlation. 5. Identify the regression equation and predict the student's final course grade if 75 optional homework assignments are done.

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.