Question

The class marks of a frequency distribution are 10, 15, 20, 25,... The class corresponding to the class mark 15 is ______.

विकल्प

• 12.5-17.5

• 12.5-17.5

• 10-20

• 10-20

• 10.25-17

• 10.25-17

• 14-16

• 14-16

Answer 1

The class marks of a frequency distribution are 10, 15, 20, 25,... The class corresponding to the class mark 15 is 12.5-17.5.

Explanation:

The class size is found by taking the difference between consecutive class marks, which in this case is 5. To determine the specific class interval, subtract and add half of this class size (2.5) to the target class mark of 15, resulting in the boundaries 12.5 and 17.5.

Answer 2

The class marks of a frequency distribution are 10, 15, 20, 25,... The class corresponding to the class mark 15 is 12.5-17.5.

Explanation:

The class size is found by taking the difference between consecutive class marks, which in this case is 5. To determine the specific class interval, subtract and add half of this class size (2.5) to the target class mark of 15, resulting in the boundaries 12.5 and 17.5.