6. Table 3 is a frequency distribution summarizing the exam grades for a random statistics class. Grade Frequency 49 5-59.5 2 59.5-69 5 3 69 5-79.5 8 79.5-89 5 12 89.5-99.5 5 Table 3: Frequency distribution summarizing the exam grades for a random statistics class. Construct the associated cumulative frequency distribution for this data set, using the same class width and limits. 7. For the distribution of this data set, qualitatively describe the skewness and modality