Question : The given histogram shows the height of the students. The number of students whose height is in the class interval 170-175 is what per cent less than the number of students whose height is in the interval 165-170? (correct to one decimal place)
Option 1: 14.3%
Option 2: 19.5%
Option 3: 11.5%
Option 4: 17.3%
Correct Answer: 14.3%
Solution : The number of students whose height is in the class interval 170-175 = 12 The number of students whose height is in the class interval 165-170 = 14 Required percentage = $\frac{\text{Students in the class interval 165-170 – Students in the class interval 170-175}}{\text{Students in the class interval 165-170}}\times100$ = $\frac{14 - 12}{14}\times100$ = $\frac{2}{14}\times100$ = $14.3\%$ Hence, the correct answer is 14.3%.
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Question : The given histogram shows the height of the students. What is the percentage of students whose height is in the class interval 165-175? (correct to the nearest integer)
Option 1: 34%
Option 2: 37%
Option 3: 25%
Option 4: 39%
Question : The given histogram shows the height of the students.
What is the percentage of students whose height is in the class interval 160 -170? (correct to the nearest integer)
Option 1: 51
Option 2: 34
Option 3: 25
Option 4: 39
The number of students whose height is in the class interval 165-170 is what percentage less than the number of students whose height is in the interval 150-155? (correct to one decimal place)
Option 1: 4.8%
Option 2: 6.7%
Option 3: 1.9%
Option 4: 5.5%
The difference between the number of students whose height is between 150-155 cm and the number of students whose height lies between 175-180 cm is:
Option 1: 8
Option 2: 9
Option 3: 3
Option 4: 7
Question : Study the given histogram that shows the marks obtained by students in an examination and answer the question that follows.
The number of students who obtained less than 350 marks is what per cent more than the number of students who obtained 400 or more marks? (correct to one decimal place)
Option 1: 350%
Option 2: 100%
Option 3: 385.7%
Option 4: 375.8%
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