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7 votes
For exercises 10-12 use the following set of data 20,28,30,6,15,18,21,22,25,29,24,26 what is the IQR range of the data

User Froderik
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1 Answer

23 votes
23 votes

Answer:

8

Explanation:

Interquartile Range

IQR = Q3 - Q1

Thus the steps are :
Put data from Small to Big number.

Find the median. (This is the second quartile Q2)

At Q2 split the ordered data set into two halves.

The lower quartile Q1 is the median of the lower half of the data.

The upper quartile Q3 is the median of the upper half of the data.

If the size of the data set is odd, do not include the median when finding the first and third quartiles. If the size of the data set is even, the median is the average of the middle 2 values in the data set. Add those 2 values, and then divide by 2. The median splits the data set into lower and upper halves and is the value of the second quartile Q2.

Hence, we get 8 as our answer.

~lenvy~

User Omerkirk
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