Calculate the sample standard deviation and sample variance for the following frequency distribution of final exam scores in a statistics class. if necessary, round to one more decimal place than the largest number of decimal places given in the data.
final exam scores
class frequency
61 - 68 3
69 - 76 14
77 - 84 2
85 - 92 14
93 - 100 8

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.