Unit 23 : Measures of Central tendency and dispersion

The frequency distribution of the lengths of 100 leaves from a certain species of plant is given below: length (mm) Frequency 20 – 24 6 25 – 29 10 30 – 34 18 35 – 39 25 40 – 44 22 45 – 49 15 50 – 54 4 5. The following table shows the distribution of heights of 50 students: ................
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