Use the given dat below to answer items 19-21. 19. How many class intervals are there? a. S b. 6 Frequency Test Scores of 20 students in a 40-lem Math quiz tally SCORES d. 8 S 1 w w 20. What is the lowest class interval? a. 16-20 31-35 b21-25 e. 31-35 d. 30-35 84 21. What is the class size? 2 11 a 3 c. 5 d. 6 22. A representation that uses bars or rectangles that show the frequency of each category. a. bar graph d. pictograph 23. An illustration that shows the association between the independent variable and the dependent b. line graph c. pie chart variable. bar graph b. line graph c. pie chart d. pictograph 24. It is a circular diagram that shows the proportion of each category. Each proportion is usually labeled by either percent or a fraction. a. bar graph b. line graph e. pie chart d. pictograph 25. The slices in a pie chart are known as? a. chart b. percent c. pie d. sector Use the 3​