Question

Find the class marks of the classes 15-35 and 45 - 60.​

Answer 1

Step-by-step explanation:

CLASS MARKS OF THE CLASS 15 - 35 = (15 × 35 ) / 2

CLASS MARKS OF THE CLASS 15 - 35 = (15 × 35 ) / 2= 262.5

CLASS MARKS OF THE CLASS 15 - 35 = (15 × 35 ) / 2= 262.5CLASS MARKS OF THE CLASS 45 - 60 = ( 45 × 60) / 2

CLASS MARKS OF THE CLASS 15 - 35 = (15 × 35 ) / 2= 262.5CLASS MARKS OF THE CLASS 45 - 60 = ( 45 × 60) / 2= 1350.

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Answer 2

class mark of class 15-35 is 25 and 45-60 is  52.5

Step-by-step explanation:

class mark : a value represented by the mid-value of a class interval.

formula used :

$\text {class mark }= \frac{\text{upper limit}+ \text{lower limit}}{2}$

given classes :

15-35

here , lower limit = 15  and upper limit = 35

therefore

class mark = $\frac{35+15}{2} = \frac{50}{2} = 25$

45-60

here , lower limit = 45  and upper limit = 60

therefore

class mark = $\frac{45+60}{2} = \frac{105}{2} =52.5$

hence , class mark of class 15-35 is 25 and 45-60 is  52.5

#Learn more:

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