Correlation and Regression Analysis

Directions: Read and analyze the statements below. Encircle the letter of the correct answer. 1. It is a variable that is inuenced or affected by the independent variable. a. Dependent variable c. variables b. Independent variable d. variation 2. It refers to the data that involves two variables. a. dependent variable c. bivariate data b. independent variable d. variables 3. Which of the following is the strength of correlation ifthe value of r is +0.33? a. perfect positive correlation c. strong positive correlation b. perfect negative correlation d. strong negative correlation 4. Which of the following is the value of r if the strength of correlation is weak positive correlation? a. +0.24 c. +0.65 b. +0.41 d. +0.39 5. If the value of r is close to -1, what is the strength of correlation? a. Weak positive correlation c. strong positive correlation b. Weak negative correlation d. strong negative correlation 6. Which table of values shows the data of the scatter plot below? O Q . . 1 Q 3 3 a. x 1 3 4 5 v 11 14 9 1c 15 b. x 3 5 7 v 11 13 16 14 15 C. X 1 3 4 v 11) 12 13 15 1? d. i". 1Which of the following is the strength of correlation from the scatter plot below? a. perfect positive correlation b. strong positive correlation o. perfect negative correlation d. strong negative correlation For numbers 3 1t}. refer to the situation below: The least square regression equation obtained for predicting the math grade given the study time per week {in hours} is Y = 1.652}: + $1.35. 3. If the average study time per week is 11} hours. what is his expected grade in math? a. 80.3? c. 85.8? b. E52. 3? d. STE? 9. If the expected grade in math is T931. how many hours is the average time per week? a. 3 c. T b. 5 d. 9 11}. If the average study time per week will increase by 1 hour. what will happen to the math grade? The math grade will increase by 1. The math grade will decrease by 1. 5'11\"?!\" The math grade will increase by 1.652. The math grade will decrease by 1.652. Identify the independent and dependent variable from the following statements. 1. Drinking energy drink makes a person aggressive. Independent variable: Dependent variable: 2. The use of fertilizer on the growth of ower. Independent variable: Dependent variable: 3. The person's diet on his health. Independent variable: Dependent variable: 4. The hours spent in work on how much you earn. Independent variable: Dependent variable: 5. The amount of vegetables you eat on the amount of weight you gain. Independent variable: Dependent variable