Please solve questions 4,5 and 7 Lesson 7.15 Plotting Data: Histograms NAME A hi

Question

Please solve questions 4,5 and 7 Lesson 7.15 Plotting Data: Histograms NAME A histogram displays using bars of different heights. It is different from a bar graph because it shows data grouped into ranges. Both axes of a histogram should be numerical data Tree Heights 500 450 400 350 200 25 175 50 SO 5 10 15 20 25 30 35 2 Height (%) Use the histogram above to answer the following qvests I. How many trees were measured in alle 2. In what range did the most trees fall 3. In what range did the least trees fall? 05 4. What percentage of trees were less than 20 feet talle 5. What percentage of trees were greater than 20 feet talla 6. How many more trees were 30-35 feet alt han 20-25feet falg0 7. What is the range of heights shown? 8. Predict how many trees would be in the 35-40 foot range5A-YE 64 if it were included on the graph 9. Explain the basis for your prediction Chapter 7,Les Probability and S w g star above the bar where a tree that measures 21 feet would be included

Explanation / Answer

The Grouped frequency distribution Table is given below:

Q 4) The number of trees less than 20 feet is = 625

Percentage of trees less than 20 feet is = (625/1800)*100 = 34.72%

Q 5)

The number of trees more than 20 feet is 1175

Percentage of trees more than 20 feet is = (1175/1800)*100 = 65.28%

Q 7) The range of height shown is 0 to 35 feet

Range = max. - min. = 35 - 0 = 35 feet

Height(ft.) No. of Trees (f) 0-5 50 5-10 175 10-15 200 15-20 200 20-25 350 25-30 425 30-35 400 Total 1800

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