Completion requirements
This lecture series discusses measures of dispersion (interquartile range, variance, and standard deviation). Watch these videos and complete the interactive exercises.
Practice
Interquartile range (IQR) - Answers
1. In summary,
The data from least to greatest is:
\(2.6,3,4.9,5,5,6,6,7.9,8,8.2\)
The interquartile range is 3 hours.
2. In summary,
The data from least to greatest is:
\(4,4,6,7,10,11,12,14,15\)
The interquartile range is 8 animal crackers.
3. 3.5
4. In summary,
The data from least to greatest is:
\(0,0,0,1,2,2,4,5,7,8,10\)
The interquartile range is 7 remote controllers.