​below is a pie chart for a set of data consisting of 5 items. the frequency of item A is 34
A=17%
B=27%
C=21%
D=14%
E=21%
a)find the frequency of B
​b)draw the frequency table for the set
c)find the angle of sector representing item C

Dear student,

i) If 17% indicates frequency 34, 
then 27 % = 34 / 17 * 27 = 54
Frequency of B is 54.

ii) 
Item % Frequency
A 17 34
B   27 54
C   21 42
D 14 28
E 21 42
Total 100 200

iii) C = 21%
Whole circle = 360°
100 % = 360°
1 % = 360° / 100
21 % = 360 °/ 100 * 21 
C represents angle of 75.6°


Regards

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