Question

make a circle graph for each set of data.
submarines
u.s. 73
china 69
russia 56
n. korea 26
s. korea 19
india 16
source: scholastic kids almanac

Explanation:

Answer:

1. First, find the total number of submarines: \(73 + 69+56 + 26+19+16=259\).
2. Then, find the percentage of each country's submarines:

• U.S.: \(\frac{73}{259}\times100\%\approx28.2\%\), central - angle \(=0.282\times360^{\circ}\approx101.5^{\circ}\)
• China: \(\frac{69}{259}\times100\%\approx26.6\%\), central - angle \(=0.266\times360^{\circ}\approx95.8^{\circ}\)
• Russia: \(\frac{56}{259}\times100\%\approx21.6\%\), central - angle \(=0.216\times360^{\circ}\approx77.8^{\circ}\)
• N. Korea: \(\frac{26}{259}\times100\%\approx10.0\%\), central - angle \(=0.1\times360^{\circ}=36^{\circ}\)
• S. Korea: \(\frac{19}{259}\times100\%\approx7.3\%\), central - angle \(=0.073\times360^{\circ}\approx26.3^{\circ}\)
• India: \(\frac{16}{259}\times100\%\approx6.2\%\), central - angle \(=0.062\times360^{\circ}\approx22.3^{\circ}\)

1. To sketch the circle - graph:

• Draw a circle.
• Use a protractor to measure and mark the central - angles for each country's segment.
• Label each segment with the country's name and the percentage of submarines it has.

Discipline: Mathematics; Sub - field: Statistics