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During a medical check-up, the heights of 40 students in a class were recorded as shown in the following table. Height (in cm) Less than 175 Less than 170 Less than 165 Less than 160 Less than 155 Less than 150 Number of students 40 35 25 16 8 4   How many students have a height of 165 cm or more?

During a medical check-up, the heights of 40 students in a class were recorded as shown in the following table. Height (in cm) Less than 175 Less than 170 Less than 165 Less than 160 Less than 155 Less than 150 Number of students 40 35 25 16 8 4   How many students have a height of 165 cm or more? Correct Answer 15

Given : Total number of students in a class is 40, So here the number of students row data given in cumulative frequency format.

Students of height 170 - 175 is 40 - 35 = 5

Students of height 165 - 170 is 35 - 25 = 10

Number of students whose height are 165 or more = 5 + 10 = 15  

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