Density Graphs Worksheet
Explore and interpret density graphs, including histograms, frequency polygons, and ogives, for Grade 11 mathematics.
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Density Graphs Worksheet
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Read each question carefully and answer to the best of your ability. Show all your work where applicable.
1. The following data represents the scores of 20 students on a math test:
65, 72, 78, 80, 81, 83, 85, 85, 87, 88, 90, 91, 92, 92, 93, 95, 96, 98, 99, 100
Construct a histogram for this data using class intervals of width 5, starting from 60.
a) What is the shape of the distribution?
b) Identify the modal class.
2. In a frequency polygon, the midpoints of the class intervals are plotted against their corresponding .
3. An ogive is also known as a frequency curve.
4. A histogram is used to display continuous data.
True
False
5. The area of each bar in a histogram represents the frequency of that class interval.
True
False
6. Which of the following graphs is used to represent cumulative frequency?
Histogram
Frequency Polygon
Ogive
Bar Chart
7. Explain the difference between a histogram and a bar chart.
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