Statistics 2 (Quartile 1 and Quartile 3)

Hai guys :)

After learn about statistics 1, let’s we learn about quartile 1 and quartile 3

Still remember with median? Median is same with quartile 2, the middle of the data.

Then how about quartile 1?

First, absolutely we have to know the median or quartile 2, symbol it with Q2

Example,

There is data score of math exam, 45,55,56,54,78,80,88,78,89

Quartile 1

We find the median or quartile 2 first, order the data first; 45,54,55,56,78,78,80,88,89 . Hence the median is 78.

Then we get all first part of data before median which is 45,54,55,56, then we find the middle data of that, that is (54+55)/2= 54,5

Hence the quartile 1 or Q1 is 54,5

Quartile 3

We hold all last part of data after median which is 78,80,88,89, then we find the middle data, that is (80+88)/2= 84.

Hence the quartile 3 or Q3 is 84.

Is it easy, right?

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