In a class of 36, students were grouped by the time (minutes) they take to reach school. The classes 0-10, 10-20, 20-30, 30-40 have frequencies 8, 14, 9 and y. A student claims y must be 6 so that all 36 are counted. Is the claim correct, and what is y?

Question

Accepted Answer

5. Total must be 36: 8 + 14 + 9 + y = 36, so 31 + y = 36, giving y = 5. The claim of 6 is wrong; y = 5.

In a class of 36, students were grouped by the time (minutes) they take to reach school. The classes 0-10, 10-20, 20-30, 30-40 have frequencies 8, 14, 9 and $y$ .
A student claims $y$ must be 6 so that all 36 are counted. Is the claim correct, and what is $y$ ?

Step-by-Step Solution

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More Class 8 Organising Data practice

In a class of 36, students were grouped by the time (minutes) they take to reach school. The classes 0-10, 10-20, 20-30, 30-40 have frequencies 8, 14, 9 and y.A student claims y must be 6 so that all 36 are counted. Is the claim correct, and what is y?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 8 Organising Data practice

In a class of 36, students were grouped by the time (minutes) they take to reach school. The classes 0-10, 10-20, 20-30, 30-40 have frequencies 8, 14, 9 and $y$ .
A student claims $y$ must be 6 so that all 36 are counted. Is the claim correct, and what is $y$ ?