Randomly survey 30 classmates about the number of pairs of shoes they own. Recor

ID: 3355264 • Letter: R

Question

Randomly survey 30 classmates about the number of pairs of shoes they own. Record their values.

1. __2___ __12___ __9___ ___26__ __6___

__11___ __5___ __5___ ___16__ __7__ __

_27__ ___22__ __5___ ___7__ ___20__ __

_15__ ___9__ ___20__ ___12__ __2___ _

_30___ __6___ ___13__ ___5__ __6___

___10__ ___4__ ___23__ ___30__ ___18__

Sorted values in ascending order are:

2 2 4 5 5 5 5 6 6 6 7 7 9 9 10 11 12 12 13 15 16 18 20 20 22 23 26 27 30 30

I don't understand how to find Q1 and Q3. How do I step by step find both? Thank you.

Q1 =

Q3 =

Here there are various ways to find Q1 and Q2 .

But we will use the way we use in excel.

Here there are n = 30

so, now we will make two sets of 15 and 15 which divide datasets into two part.

so as the set 1 will have 15 values then the 8th value would be the Q1

so Q1 = 6

similarly, 23th value in ascending order would be the Q3

Q3 = 20

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