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The given histogram shows the height of the students. The number of students whose height is in the class interval 170-175 is what percent less than the number of students whose height is in the interval of 165-170? (correct to one decimal place)

The given histogram shows the height of the students. The number of students whose height is in the class interval 170-175 is what percent less than the number of students whose height is in the interval of 165-170? (correct to one decimal place) Correct Answer 14.3%

Given:

Height (in cm)

Number of students

150-155

15

155-160

13

160-165

10

165-170

14

170-175

12

175-180

6

Calculation:

Number of students in the interval of 170-175 = 12

Number of students in the interval of 165-170 = 14

Difference = 14 – 12 = 2

Percentage = (Difference/Number of students in the interval of 165-170) × 100

⇒ Percentage = (2/14) × 100

⇒ Percentage ≈ 14.28 ≈ 14.3

∴ Students in the class interval of 170-175 are nearly 14.3% less than the students in the class interval of 165-170

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