Question

What is the interquartile range for the data set?

341, 330, 301, 345, 309, 311, 342, 301, 304, 328, 343

Answer 1

38

Explanation:

Interquartile Range

IQR = Q3 - Q1

Quartiles are the values that divide a list of numbers into quarters:

• Put the list of numbers in order.
• Then cut the list into four equal parts.

301, 301, 304, 309, 311, 328, 330, 341, 342, 343, 345

Hence,

Quartiles:

Q1 --> 304

Q2 --> 328

Q3 --> 342

And since, IQR = Q3 - Q1

Then,

342 - 304 = 38

As a result, the interquartile range for the data set is 38.

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