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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

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$\xb0$

100 % = 360$\xb0$

1 % = 360$\xb0$ / 100

21 % = 360 $\xb0$/ 100 * 21

C represents angle of 75.6$\xb0$

Regards

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