Question

2. Following is the distribution of marks of 50 students : 40-50 50—60 60-70 70-80 80-90 90-100 Classes 010 1020 2030 30 40 3 3 4 2 5 8. 5 8 7 15 No. of Students (i) What is the lower limit of second class ? (ii) What is the upper limit of 4th class ? (iii) What is the class-mark of 8th class ? (iv) What is the class-mark of 5th class ? (v) What is the class-size or class-width of the above distribution ?​

Answer 1

Answer:

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