o 1o 10-20 20 30 200 100 30-4o 7. Refer to Exhibit 2-1, The class width for this

Question

o 1o 10-20 20 30 200 100 30-4o 7. Refer to Exhibit 2-1, The class width for this distribution a. is 9 b. is 1o c is 39, which is: the largest value minus the smallest value or 40-0-40 d. varies from class to class Refer to Exhibit 2-1. The relative frequency of students working less than 10 hours a. is 20 b. is 100 c is0.95 d. 0.05 Refer to Exhibit 2-1. The cumulative relative frequency for the class of 20-30 a. is 300 b. is 0.25 . is 0.75 is 0.5 fer to Exhibit 2-1. The cumulative frequency for the class of 20-30 is 200 is 300 is 0.75 s 0.5

Explanation / Answer

Q7) Class width is 10. Option B is Correct

Q8) Relative frequency for studeents woking less than 10 hours = 20/400 = 0.05. Option D is Correct

Q9) Cummutative Relative Frequency = 300/400 = 0.75. Option C is Correct

Q10) Cummutative Frequency = 20+80+200 = 300. Option B is Correct

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