Question

find the median
90,50,70,80,70,60,20,30,80,90,20

Answer 1

Median=$\frac{sum of all data}{no. of data}$

            =$\frac{90+50+70+80+70+60+20+30+80+90+20}{11}$

            =$\frac{660}{11}$

            =60

Hope this helps!!! :)

Answer 2

$\texbf {Answer}$


$\texbf{Step by Step Process for Finding the Median}$

1) Put the numbers in numerical order from smallest to largest.


2)If there is an odd number of numbers, locate the middle number so that there is an equal number of values to the left and to the right.  If there is an even number of numbers locate the two middle numbers so that there is an equal number of values to the left and to the right of these two numbers.


3)If there is an odd number of numbers, this middle number is the median.  If there is an even number of numbers add the two middles and divide by 2.  The result will be the median.


$\bftex{back on question}$


ind the median
90,50,70,80,70,60,20,30,80,90,20


so


$\bftex{Step (1)}$

First, put the numbers in numerical order from smallest to largest.


20,20,30,50,60,70,70,80,8090,90


$\bftex{Step(2)}$


Notice that there are 11 numbers.  This is an odd number of values, so we locate the middle number.  The middle number is 70  Notice that there are an equal number (5) of numbers to the left of70 and to the right of 70.



$\bftex{Step(3)}$


 We are in the case that there are an odd number of values, so the median is this middle number.  That is, the median is 70
.