Question

What is the percentage difference between the number of people in the height range 159.5 - 169.5cm and 169.5 - 179.5cm?

• A. 5.67 %
• B. 8.67
• C. 6.67 %
• D. 7.67 %

Answer 1

The correct option is C 6.67 %

From the graph, we can see total number of people = (6+9+7+5+2+1)
= 30
Number of people in the height range 159.5 - 169.5 cm = 7

Number of people in the height range 169.5 - 179.5 cm = 5

Difference between height range 159.5 - 169.5cm and 169.5 – 179.5cm= 7 - 5 = 2

Percentage difference between height range 159.5 – 169.5 cm and 169.5 – 179.5 cm
= $\frac{2}{30}\times 100=6.67\%$