Question

In a frequency distribution, the mid value of a class is 10 and the width of the classes 6. The lower limit of the class is : *

2 points

6

7

8

12

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Answer 1

Answer:

The classmark is defined as the average of the upper and lower limits of a class. For 5-10, the classmark is (5+10)/2 = 7.5. The class size is the difference between the lower and upper class-limits. Here, we have a uniform class size, which is equal to 5 (5 – 0, 10 – 5, 15 – 10, 20 – 15 are all equal to 5).