Question

length of class interval 90-99 is
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Answer 1

Answer:

10

Step-by-step explanation:

The length of a class interval is the range of the upper boundary and the lower class boundary.

In our case the upper class boundary is  the sum of upper class limit and 0.5, i.e.

99+0.5=99.5

The lower class boundary is the lower class limit less 0.5, i.e.

90-0.5=89.5

Therefore the length of this class interval is

99.5-89.5=10

Answer 2

Answer:

9

Step-by-step explanation:

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