Question

how to put inequilities in class interval with these numbers
18.7
19.3
15.9
17.5
19.4
20.9
17.3
19.7
15.8
15
17.2
21.6
21.8
17.4
17
22
15.6
19.4
16.5
25.5
15.9
16.2
18.2
17.5

Answer 1

Answer on Question #58232 – Math – Statistics and Probability

Question

How to put inequalities in class interval with these numbers:

Solution

We need to find the range:

$$range = max - min = 25.5 - 15 = 10.5.$$

We need to state the number of class intervals. For example, let it be 4.

The width of intervals is

$$w = \frac{10.5}{4} = 2.625 \text{ round up to } 3.$$

The inequalities for class intervals are as follows:

In our case,

It is easy now to produce a frequency distribution for this set of data:

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