9 Complete a stem-and-leaf plot for the following population of grades on a recent test: 78 42 67 78 99 84 91 82 86 94 10 Using the data in question 9: (rounding 2 decimals after the period) . What is the (arithmetic) mean of the population: . What is the median: . What is the mode: .What is the range: 2> . What is the midrange: m =m0 0w . What is the variance: . What is the standard deviation: Q 11 Draw a box plot of the above data to scale, complete with whiskers, Q1, Q3, IQR and median. What are the values: Ql= Q3= IQR= Which observation(s) can be considered an outlier: Is the data positively or negatively skewed