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Create a bar graph showing the total number of cases for each age group using the provided data.

Mathematics

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Answer

To construct the bar graph, we will use the 'Age group' for the horizontal axis and the 'Total' number of cases for the vertical axis.

Step-by-step solution

5 steps

Here is the data extracted from the table for the bar graph:

  • 0-4 yrs: 41 cases
  • 5-9 yrs: 14 cases
  • 10-14 yrs: 7 cases
  • 15-19 yrs: 213 cases
  • 20-24 yrs: 528 cases
  • 25-29 yrs: 624 cases
  • 30-34 yrs: 539 cases
  • 35-39 yrs: 398 cases
  • 40-44 yrs: 216 cases
  • 45-49 yrs: 121 cases
  • 50-54 yrs: 87 cases
  • 55-59 yrs: 33 cases
  • 60 yrs above: 36 cases

Instructions for constructing the bar graph:

  1. Draw the Axes

    Draw a horizontal axis (x-axis) and a vertical axis (y-axis).

  2. Label the X-axis

    Label the horizontal axis as "Age Group". Mark equally spaced points along this axis for each age group:
    0-4 yrs, 5-9 yrs, 10-14 yrs, 15-19 yrs, 20-24 yrs, 25-29 yrs, 30-34 yrs, 35-39 yrs, 40-44 yrs, 45-49 yrs, 50-54 yrs, 55-59 yrs, 60 yrs above.

  3. Label and Scale the Y-axis

    Label the vertical axis as "Total Number of Cases".
    The highest value is 624, so scale the y-axis from 0 to at least 650 (e.g., up to 700). Mark increments, for example, every 100 units (0, 100, 200, 300, 400, 500, 600, 700).

  4. Draw the Bars

    For each age group on the x-axis, draw a vertical bar with a height corresponding to its total number of cases:

    • For "0-4 yrs", draw a bar up to 41.
    • For "5-9 yrs", draw a bar up to 14.
    • For "10-14 yrs", draw a bar up to 7.
    • For "15-19 yrs", draw a bar up to 213.
    • For "20-24 yrs", draw a bar up to 528.
    • For "25-29 yrs", draw a bar up to 624.
    • For "30-34 yrs", draw a bar up to 539.
    • For "35-39 yrs", draw a bar up to 398.
    • For "40-44 yrs", draw a bar up to 216.
    • For "45-49 yrs", draw a bar up to 121.
    • For "50-54 yrs", draw a bar up to 87.
    • For "55-59 yrs", draw a bar up to 33.
    • For "60 yrs above", draw a bar up to 36. Ensure all bars are of equal width and have equal spacing between them.
  5. Add a Title

    Give the graph a clear title: "HIV Positive Cases Detected in 2012 by Age Group".

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