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Sagot :
Answer:
Step-by-step explanation:
To find the median, arrange the data in ascending order
10,20,30,40,50,60,70,80,90
Number of data = 9 . It is a odd number
So, median will be the (n+1)/2 th term
[tex]\left(\dfrac{9+1}{2} \right)^{th \ term} = (\dfrac{10}{2})^{th \ term} = 5^{th \ term}[/tex]
Median = 50
Solution:
Step-1: Re-arrange the following data from biggest to smallest.
- 30, 10, 40, 20, 60, 50, 80, 70, 90
- => 90, 80, 70, 60, 50, 40, 30, 20, 10
Step-2: Refer to the following:
1. If there is an even number of digits, you will use the formula:
- (Total number of digits)/2
2. If there is an odd number of digits, you will use the formula:
- (Total number of digits + 1)/2
Step-3: Find the median:
If we count the number of digits in the data, we can say that nine numbers are in this data. Thus, we will use the formula "(Total number of digits + 1)/2"
- => (Total number of digits + 1)/2 term
- => (9 + 1)/2 term
- => 10/2 term
- => 5th term
The fifth term of the group is the median.
Step-4: Review the "biggest to smallest" data.
- 90, 80, 70, 60, 50, 40, 30, 20, 10
Since 50 is the 5th term, the median is 50.
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