Presentation of Data

What is the visual representation of data using rectangles whose widths represent class boundaries and whose lengths/heights represent the frequencies of the intervals?

• pie chart

• line graph

• ogive

• histogram

What graph use upper class boundaries of the cumulative frequencies.

• pie chart

• histogram

• line graph

• ogive

Which of the following illustrations shows the graph of a histogram?

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Answer explanation

Don't get confused!

Last Thursday, Alpheus spent 12 hours of the day sleeping and playing, 2 hours eating and dressing, 6 hours at school, and 4 hours surfing the internet. What graph is appropriate to show the percentages of time spent on his activities in the day?

• bar graph

• line graph

• pie chart

• histogram

Answer explanation

The “pie chart” is also known as a “circle chart”, dividing the circular statistical graphic into sectors or sections to illustrate the numerical problems. Each sector denotes a proportionate part of the whole. To find out the composition of something, Pie-chart works the best at that time. In most cases, pie charts replace other graphs like the bar graph, line plots, histograms, etc.

What appropriate graph can be used to show the population of Region XII in the Philippines from 1989 to 2020?

• bar graph

• line graph

• pie chart

• histogram

Answer explanation

DO YOU KNOW THAT:

• ● Mathematicians and statisticians use line graph to prove and solve their hypotheses and theorems.

• ● Governments and private entities use it to showcase trends in different fields, such as yearly population growth, rainfall trends in a particular region, etc.