How many students total are in this class?

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Homework Help Overview

The discussion revolves around determining the total number of students in a class based on shoe sizes and their frequencies. Participants are comparing their calculations with a provided answer from a book, which states there are 28 students.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants are questioning their own calculations and the method of adding shoe sizes versus frequencies. Some express confusion over the discrepancy between their results and the book's answer.

Discussion Status

There is a mix of attempts to clarify the problem, with some participants agreeing with the book's answer while others express uncertainty about their own calculations. The conversation includes humorous remarks and assumptions about shoe sizes, indicating a light-hearted exploration of the topic.

Contextual Notes

Participants are noting assumptions about shoe sizes and the distribution of students, with some questioning the validity of the problem's setup. There is mention of a minimum number of students, suggesting that the problem may have constraints that are not fully addressed.

Phisico
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Homework Statement
I got the different answer as in the book, explain please if I am wrong.
Relevant Equations
Total number of students?
242831
The book got 28 students, I got up, when I added up 2+3+4 etc. I got a bigger answer explain please, if I did it wrong.
Thank - you
in advance
 
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Phisico said:
Problem Statement: I got the different answer as in the book, explain please if I am wrong.
Relevant Equations: Total number of students?

View attachment 242831 The book got 28 students, I got up, when I added up 2+3+4 etc. I got a bigger answer explain please, if I did it wrong.
Thank - you
in advance
What did you get for the number of students? This is a very simple problem that requires only that you keep a running total of the frequencies of the shoe sizes. BTW, I agree with the book's answer.
 
Thanks/ I understood it.
 
Phisico said:
Problem Statement: I got the different answer as in the book, explain please if I am wrong.
Relevant Equations: Total number of students?

I got up, when I added up 2+3+4 etc.
It looks like you were adding the shoe sizes instead of the frequencies.
 
Who in the world wears a size 2 shoe? :smile:
 
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berkeman said:
Who in the world wears a size 2 shoe? :smile:
Must have had Hervé Villechaize in the class
 
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berkeman said:
Who in the world wears a size 2 shoe? :smile:
Looks like the problem designer failed to take heed of the fact (among others he apparently disregarded) that the specification "third year maths class" should bias the distribution (of students over/across shoe sizes) to the right. 😉
 
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Some assumptions happening here: who says they have the same size on each foot?
There are at least 14 students in the class.
:-p
 
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DaveC426913 said:
Some assumptions happening here: who says they have the same size on each foot?
There are at least 14 students in the class.
:-p
HEY, *I'M* supposed to be the nitpicker in chief on this forum :smile:
 
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  • #10
berkeman said:
Who in the world wears a size 2 shoe? :smile:
Perhaps they wear size 4, but have only one shoe.
 

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