Is the magnitude of an earthquake related to the depth below the surface at which the quake occurs? Let x be the magnitude of an earthquake (on the Richter scale), and let y be the depth (in kilometers) of the quake below the surface at the epicenter. Suppose a random sample of earthquakes gave the following information.   x 2.5 4 3.4 4.4 2.4 y 5.2 10.3 10.8 10.3 8.3 ​

Below a r bivariate data sets and their scatter plots. (Note that all of the scatter plots are displayed with the same scale.) Each data set is made up of sample values drawn from a population. x y 11- 1- 1.0 1.0 1.0 7.5 10+ 9- 8- 7- 6- 10+ 2.0 8.8 8- 3.0 6.9 2.0 2.0 9- 3.0 3.0 7- 4.0 5.2 5.0 8.4 6.0 4.9 7.0 4.7 8.0 6.8 9.0 6.1 4.0 4.0 6- 5- 5- 5.0 5.0 4- 4- 6.0 6.0 3- 2 3- 7.0 7.0 2 1- 1- 8.0 8.0 9.0 9.0 10.0 10.0 Figure 1 10.0 4.2 Figure 2 1- 1.0 2.6 10- 1.0 6.7 10+ 9- 2.0 9.6 8- 3.0 3.6 2.0 4.5 9- 3.0 3.2 7- 1- 4.0 5.0 4.0 9.2 6- 6- 5- 5- 5.0 4.9 6.0 2.0 7.0 5.6 8.0 9.8 9.0 5.2 10.0 8.2 Figure 4 5.0 4.6 4- 6.0 7.0 7.0 6.0 8.0 7.7 3- 3- 2- 2- 1- 9.0 7.1 10.0 8.4 Figure 3 Answer the following questions about the relationships between pairs of variables and the values of r, the sample correlation coefficient. The same response may be the correct answer for more than one question. (a) For which data set is the sample correlation coefficient r closest to 0? ? Choose one) (b) Which data…

The population mean mu is a measure of A. Central tendency of a sample B. Central tendency of a populationC. Dispersion of a population D. The uncertainty of a population E. None of the above

A population of scores has a mean of µ=89, a median of 87 and a mode of 85. What is the most likely shape for the population distribution? Symmetrical Positively skewed Negative skewed It cannot be determined from the information given O O

The trade volume of a stock is the number of shares traded on a given day. The following data, in millions represent the volume of a certain stock traded for a random sample of 40 trading days in 2007. use the data to compute a point estimate for the population mean number of shares traded per day in 2007. (Round to three decimal places as needed.)