ASSIGNMENT

SOLUTIONS

3. STEM AND LEAF PLOT STEM | LEAF | 1 | 2 0 | 2 | 1 3 2 2 | 3 | 2 5 9 6 7 4 6 8 5 | 4 | 3 5 5 5 4 6 5 | 5 | 4 3 5 5 6 7 | 6 | 0 4 |

4. AGES (YEARS) | FREQUENCY | CLASS BOUNDARY | CLASS SIZE | FREQUENCY IDENTITY | 5-14 | 8 | 4.5-14.5 | 10 | 0.8 | 15-19 | 16 | 14.5-19.5 | 5 | 3.2 | 20-24 | 18 | 19.5-24.5 | 5 | 3.6 | 25-29 | 12 | 24.5-29.5 | 5 | 2.4 | 30-44 | 6 | 29.5-44.5 | 15 | 0.4 |

5. HEIGHT | FREQUENCY | CUMMULATIVE FREQUENCY | CLASS BOUNDARY | 120-129 | 6 | 6 | 129.5 | 130-139 | 15 | 21 | 139.5 | 140-149 | 31 | 52 | 149.5 | 150-159 | 37 | 89 | 159.5 | 160-169 | 9 | 98 | 169.5 | 170-179 | 2 | 100 | 179.5 | | | | |

6. MARKS (%) | FERQUENCY | CUMMULATIVE FREQUENCY | CLASS BOUNDARY | 30-34 | 2 | 2 | 34.5 | 35-39 | 4 | 6 | 39.5 | 40-44 | 7 | 13 | 44.5 | 45-49 | 10 | 23 | 49.5 | 50-54 | 8 | 31 | 54.5 | 55-59 | 5 | 36 | 59.5 | 60-64 | 3 | 39 | 64.5 | 65-69 | 1 | 40 | 69.5 |

7. NUMBER OF STUDENTS (THOUSANDS) | YEAR | PRIMARY SCHOOL | SECONDARY SCHOOL | TOTAL STUDENTS | 1971 | 350 | 154 | 504 | 1975 | 351 | 176 | 527 | 1979 | 353 | 177 | 530 | 1983 | 354 | 180 | 534 |

8. Stem – and – leaf plot for a boy whose height is 162cm (a stem of 16 and a leaf of 2). STEM | LEAF | 16 | 2 |

9. MONTH | RAINFALL (CM) | January | 5.3 | February | 4.9 | March | 6.0 | April | 5.2 | May | 3.4 |

10. Grade | A | B | C | D | E | F | School M | 5 | 8 | 38 | 14 | 25 | 10 | School N | 18 | 22 | 20 | 10 | 25 | 5 |

11. a. Yaro’s Annual Expenses | Items | Amount | Food | 30% | Rent | 15% | Transport | 7.5% | Income tax | 20% | Savings | 5% | Miscellaneous | 22.5% |

b. Food expenses = 30/100 * 1,800 =₵540.00 12. a DAYS | Reserved water (mm) | Monday | 61 | Tuesday | 49 | Wednesday | 37 | Thursday | 25 | Friday | 63 | Saturday | 45 | Sunday | 27 | Monday | 9 | b.

13. Faculty | Professors | Snr Lecturers | Lecturers | Business Administration | 2 | 3 | 12 | Social Studies | 6 | 2 | 13 | General Studies | 3 | 1 | 6 | a. Component bar chart b. Grouped bar chart

14. Election Results | Party | No. Of votes | A | 140 | B | 110 | C | 190 | D | 520 | E | 240 | Total Votes | 1200 | a. b. Percentage won by the winner = 520/1200 * 100 = 43.33% 15 a. CARS SOLD FROM JANUARY TO JUNE | MONTH | AMOUNT | | | | JANUARY | 7100 | | | | FEBRUARY | 7668 | | | | MARCH | 10366 | | | | APRIL | 9940 | | | | MAY | 8236 | | | | JUNE | 7810 | | | | TOTAL SALE | 51120 | | | |

b. February = 7668/51120 * 100 = 15%