What is the correlation between X and Y? a) 1.0 b) -1.0 c) 0.0 d) -0.5

Data were collected from 6 students:x = stress score on morning of test; y = grade on testx: 4 7 9 10 6 6y: 96 89 63 58 94 86a) Draw a scatterplot in space below. b) Determine the value of r. ________________c) Give the direction and strength of the correlation. _____________________________d) Find the equation of the regression line. __________________________e) Predict the grade for a student with stress level 7. ____________ f) Use the result of e) to find the residual for the data point (7,89). ___________g) Circle the correct choice and fill in the blank: For each additional point on thestress score, the grade for a student (increases, decreases) on average by about_______ points.h) Fill in the blank: ______ % of the variation in grades can be explained by thestress score. i) Fred’s stress score was 2. Will the regression equation accurately predict hisgrade? Explain. j) It turned out that, for the six students sampled, the correlation between thenumber of hours spent studying and…

Which of the following statements is correct? O Changing the units of measurements of the explanatory or response variable does not change the value of the correlation. O A negative value for the correlation indicates that there is no relationship between the two variables. O The correlation has the same units (e.g., feet or minutes) as the explanatory variable. Correlation between y and x has the same number but opposite sign as the correlation between x and y.

Find teh correlation coefficient  between X and Y X 57 58 59 59 60 61 62 64 Y 77 78 75 78 82 82 79 81