80 94 58 66 56 82 78 86 88 56 36 66 84 76 78 64 66 78 60 64 a. Construct a stem and leaf plot with the data provided in exercise 3. (5 points) b. Which data has the highest frequency (2 points)? c. Compare this graph with the one you constructed in exercise 3. Which graph do you think is more effective in representing this data set? Explain your answer.