Question

Find the class mark of the class 36-40. What is the next consecutive class?

Answer 1

class mark=upper limit +lower limit/2
class mark=36+40/2
class mark=76/2
class mark=38.

next consecutive class is 40-44.

Answer 2

Answer:

The class mark of the class 36 - 40 is 38

The next consecutive class is 40 - 44

Step-by-step explanation:

The given class interval is 36 - 40

We know that Class Mark = $\frac{U+L}{2}$

where U = Upper limit of the class

           L = Lower limit of the class

Here, it is clear that the upper limit is 40 and the lower limit is 36

Therefore, class mark = $\frac{40+36}{2}$

                                     =  $\frac{76}{2}$

                                     =  38

Therefore, the class mark of the class 36 - 40 is 38.

We know Class Size = Upper limit - Lower limit

Here, the class size = 40 - 36

                                       = 4

Therefore, the next class will also have the size as 4

As it is a consecutive class, the lower limit = upper limit of the previous class = 40

Upper limit = Lower limit + Class size

=> Upper limit = 40 + 4

                       = 44

Therefore, the next consecutive class is 40 - 44