Question

If the class mark and class size are 6 and 4 respectively, then the upper limit of the class is

Answer 1

Step-by-step explanation:

Let the a be the lower limit of the class interval

Class size of the class interval =3

∴ Upper limit of the class interval=a+3

Class mark=6.5

∴

2

a+a+3

=6.5

⇒2a+3=6,5×2

⇒2a=13−3

⇒2a=10⇒a=

2

10

=5

∴a+3=5+3=8

Hence class interval= 5−8

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Answer 2

Answer:

10

Step-by-step explanation:

you have to do addition