Question

Using intervals of width 10, how many intervals are needed for this graph to be drawn correctly? 5 or fewer between 6 and 10 between 11 and 19 25 or more.

Answer 1

The graph takes 299 units width and intervals are of width  10, thus we can do division.

The number of intervals of width 10 needed to draw the given graph is specified by:

Option D: 25 or more.

Given that:

• The graph extends from 0 to 299 units.

To find:

Number of intervals with width 10 units needed to draw this graph correctly.

Finding the range(the width graph uses) of values lying in graph:

Range = Maximum value - minimum value = 299 - 0 = 299

If the width of intervals used is 10, then

$\text{Number of intervals needed } \geq \dfrac{Total width}{width of interval} = \dfrac{299}{10} = 29.9\\\text{Number of intervals needed} = 30$

We took greater or equal since we don't want to leave some points of the graph out, thus we ensure taking enough amount of intervals so as to cover the whole graph even if some space is remain unused in intervals.

Thus, Option D: 25 or more is correct option as 30 is more than 25.

Learn more about interval and graph here:

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