In comparing data sets, which of the following is to be used? A coefficient of variation B range mean D modeIf there is a small amount of variation, then A the standard deviation is large. B the standard deviation is small. the standard deviation cannot be determined. D) the standard deviation is zero.\fThe grades of a sample of 9 students on a prelim exam (x) and on the midterm exam (y) are shown in the excel worksheet. Predict the midterm grade if the prelim grade is 85. Given the test scores in a quiz in MMW, create a grouped frequency distribution with five class intervals. Find the relative frequency of third class. Given a normal distribution with = 200 and o= 10, find the area above 188. A 0.3845 B 0.8852 0.1155 D 0.8849Which of the following is not a property of the mean? A It is affected by extreme scores. B It considers every score in the distribution. It is the most numbered score.Given a normal distribution with = 200 and o= 10, find the area below 216. A 0.5000 B 0.4452 0.0548 D 0.9452What is the first step in solving a linear programming problem by graphical method? A Determine the feasible solution. B Form the model. C Determine the corner points of the feasible solution. D Graph the inequalities.It is known as the non negativity constraint. A explicit B decision variables implicit D objective function