Question
The number of employees whose savings are 30 % is ________.
- 70
- 30
- 110
- 200
Hint:
The visual display of data (often grouped) in the shape of vertical or horizontal rectangular bars, with the length of the bars corresponding to the measure of the data, is called a bar graph. Here we have given a bar graph and we have to find the number of employees who save 30%.
The correct answer is: 200
Now we know that a graph is made up of vertices, or points, and edges, or lines connecting those vertices. Graphs come in a wide variety of forms in discrete mathematics.
The heights of the rectangular bars in a bar graph, which displays complete data, are proportionate to the values they indicate.
There are two types of a bar graph:
- Vertical Bar Graph
- Horizontal Bar Graph
Although the bars in bar graphs can be plotted either horizontally or vertically, the vertical bar graph is the one that is most frequently used.
Now we have given a bar graph which is a Vertical one. In that graph, there are 4 bars of saving percent, 20%, 30%, 40% and 50%. We have asked the number of employees who save 30%.
So from the graph, we can see that the bar of 30% is touching the y-axis at 200.
So the number of employees who save 30% is 200.
Here we used the concept of bar graphs and understood are different types of bar graphs. The number of employees who save 30 % is 200. Although the bars in bar graphs can be plotted either horizontally or vertically, the vertical bar graph is the one that is most frequently used.
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