Question

I am given a pie chart with 4/6 of the slots filled in with the percent. I am told that one of the sections that has nothing represents the business majors measures 72 degrees. They then ask me to figure you the percentage of business majors and round it to the nearest whole number. I don’t understand how to find the percentage when I don’t have the other section of the pie chart

Step 1

**Note:**

When the several categories in a data set are represented in a pie chart, it must be remembered that the total frequency of all the categories taken together is 100% of the frequency. On the other hand, the total angle about the centre of a pie chart, that is, the centre of a circle is 360^{0}.

So, the important thing to keep in mind in case of a pie chart is, 360^{0} = 100%.

Step 2

**Calculation:**

The section of the pie chart representing the business majors is 720.

Now, 3600 = 100%.

Therefore, by unitary method, 720 = (100/360)*72% = 20%.

Hence, if the angle corresponding to a particular category in a pie chart is known, the per...

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