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Sahay Sir > Question Answers > NCERT Class 9 > Maths > Chapter 14 - Statistics > 4. The length of 40 leaves of a plant are measured correct to one millimeter, and the obtained data is represented in the following table: S.No. Length (in mm) Number of leaves 1. 118 – 126 3 2. 127 – 135 5 3. 136 – 144 9 4. 145 – 153 12 5. 154 – 162 5 6. 163 – 171 4 7. 172 – 180 2 (i) Draw a histogram to represent the given data. [Hint: First make the class intervals continuous] (ii) Is there any other suitable graphical representation for the same data? (iii) Is it correct to conclude that the maximum number of leaves are 153 mm long? Why?

4. The length of 40 leaves of a plant are measured correct to one millimeter, and the obtained data is represented in the following table: S.No. Length (in mm) Number of leaves 1. 118 – 126 3 2. 127 – 135 5 3. 136 – 144 9 4. 145 – 153 12 5. 154 – 162 5 6. 163 – 171 4 7. 172 – 180 2 (i) Draw a histogram to represent the given data. [Hint: First make the class intervals continuous] (ii) Is there any other suitable graphical representation for the same data? (iii) Is it correct to conclude that the maximum number of leaves are 153 mm long? Why?

2. Classify the data in Q.1 above as primary or secondary data. 4. The length of 40 leaves of a plant are measured correct to one millimeter