The table shows the number of males in different age groups with raised cholesterol levels in Scotland between 2004 and 2013 - Scottish Highers Human Biology - Question 6 - 2018

To find the percentage decrease for each age group, we use the following formula:

ext{Percentage Decrease} = rac{ ext{Initial Value} - ext{Final Value}}{ ext{Initial Value}} imes 100

Calculating for each age group:

• Under 15:

  • Initial: 1 (2004)

  • Final: 1 (2013)

  • Percentage Decrease: rac{1 - 1}{1} imes 100 = 0\%

• 15–44:

  • Initial: 33 (2004)

  • Final: 14 (2013)

  • Percentage Decrease: rac{33 - 14}{33} imes 100 \\approx 57.58\%

• 45–64:

  • Initial: 236 (2004)

  • Final: 128 (2013)

  • Percentage Decrease: rac{236 - 128}{236} imes 100 \\approx 45.76\%

• Over 64:

  • Initial: 274 (2004)

  • Final: 167 (2013)

  • Percentage Decrease: rac{274 - 167}{274} imes 100 \\approx 39.0\%

From these calculations, the age group 15–44 had the greatest percentage decrease of approximately 57.58%.