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Question

Given below are the heights of 20 students in centimetres.

Find the number of students whose height is less than or equal to 169 cm

150178153156162184170176186173153186162159180183165180150156


A

9

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B

10

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C

12

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D

15

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Solution

The correct option is B

10


When we arrange the heights in a grouped frequency table, we get the following table:

HeightNumber of students15015441551593160164216516911701742175179218018441851902Total20

To consider students with height less than or equal to 169 cm, the groups to be considered are

HeightNumber of students1501544155159316016421651691Total10

Number of students less than or equal to the height of 169 cm is = 10


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