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IV. Following Histogram gives heights of black cherry trees. Answer the following questions. Heights of Black Cherry Trees (4 marks) Frequency 6 8 10

IV. Following Histogram gives heights of black cherry trees. Answer the following questions. Heights of Black Cherry Trees (4 marks) Frequency 6 8 10 10 60 65 70 75 80 Height (feet) 85 90 a. How many data classes are there? b. What is the total number of black cherry trees? c. What is proportion of trees having height less than 75 feet? d. What percent of trees having height more than 80?

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