Here is a bivariate data set. X 15 18 20 50 14 10 26 y -8 13 8 86 12 -19 18 Find the correlation coefficient and report it accurate to four decimal places. r =

Find correlation coefficient  If xi 0 11 21 23 14 25 yi 5 43 45 47 51 54

If the coefficient of correlation is a negative value, then the coefficient of determination _____.  Select one: A. must be positive B. can be either negative or positive C. must also be negative D. must be 0

A car manufacturer company shares the data of its one of the brands in 1086cc category during 2003 to 2009. The data listed in Table No.3. Table 3. The number of sales of a car in 1086cc category Year No. 1 Sales 3| 4 | 5 | 6| 7 | 3135 | 6922 | 7009| 7031| 3470| 2227| 404 2 (a) Let you are working in the data processing unit of this company. Compare years and sales by using suitable graphing technique and suggests why the company should make some changes in this product otherwise the company should discontinue the production of this model. (b) Apply a statistical technique that quantifies the relationship between the number of years and corresponding sales. Interpret the results that you obtained through statistical technique to justify your explanation.

Q1, a. define correlation and it's types.        b. write the properties of r.

Determine whether the data are discrete or continuous. Number of students in the mathematics classes during the fall semester at your school for a particular school year ODiscrete O Continuous

which statement regarding correlation is true? The dependent variable is assigned to the Y-axis The independent variable is assigned to the x-axis The Y and X-axis are interchangebale A and B

L77Q6.

Which of the following statements regarding the coefficient of correlation is true? Multiple Choice It ranges from 0.0 to +1.0 inclusive. It describes the relationship between two variables. A value of 0.00 indicates two variables are related. It is calculated as the square of the slope.

Which of these correlations is the strongest?A. -0.71B. 0.08C. 0.62D. -0.12