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Building Pie Chart

The pie chart...

Question

The pie chart shows the examination grades obtained by a group of students. Which of the following statements about the pie chart is true?

15 %

of the students scored grade

B

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90 %

of the students scored grade

A

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\frac{1}{4}

of the students scored grade

B

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\frac{1}{3}

of the students scored grade

C

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Solution

The correct option is D $\frac{1}{3}$ of the students scored grade $C$
Since the total angle at the centre of a circle is $360^{o}$ angle for $C$ is $360^{o} - 90^{o} - 150^{o} = 120^{o}$
Since $120^{o} = \frac{1}{3} \times 360^{o}$ , the correct answer is $\frac{1}{3}$ of the students scored grade $C$ .

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Similar questions

Q. The pie chart shows the distribution of grades obtained by a group of students in a test. The number of students who scored grade C is twice the number who scored grade B, and

\frac{3}{5}

of the students scored grades B and C. Find the angle of sector which represents grade C.

Answer the question for the following pie chart.

If 400 students took the test, how many students scored grade C?

Q. In grade 6, 25 out of 40 students scored above 90%, while in grade 7, 35 out of 50 students scored above 90%. In which grade did a greater proportion of students score above 90%?

Q. The teacher divided the students of grade

7

into

4

groups and conducted a test. The number of students in the

4

groups formed were

12, 16, 13

, and

15

and the corresponding average score of these groups were

23, 25, 19

, and

27

.

What will be the weighted average score of the students of grade

7

The table shows the number of marks scored by four students in an exam .
$\begin{matrix} S t u d e n t & M a r k s s c o r e d 1 & 90 2 & 75 3 & 45 4 & 60 \end{matrix}$
What is the angle of sector in a pie chart representing the marks of student 3?

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The pie chart shows the examination grades obtained by a group of students. Which of the following statements about the pie chart is true?

The correct option is D 13 of the students scored grade CSince the total angle at the centre of a circle is 360o angle for C is 360o−90o−150o=120oSince 120o=13×360o, the correct answer is 13 of the students scored grade C.