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CBSE Class 8 Answered

Given below is the distribution of marks scored by some students in an examination: Marks 50-60 60-70 70-80 80-90 90-100 Number of students 10 9 6 3 2 (1)  What is the class size? (2)  What is the upper limit of the class interval 80-90? (3)  The results of how many students are recorded here?
Asked by Topperlearning User | 27 Jul, 2016, 08:10: AM
answered-by-expert Expert Answer

(1)  Class size = Upper limit - Lower limit = 60 - 50 = 10

(2)  The upper limit of the class interval 80-90 is 90.

(3)  Total number of students = 10 + 9 + 6 + 3 + 2 = 30

      Thus, the results of 30 students are recorded.

Answered by | 27 Jul, 2016, 10:10: AM

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