Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Measures of variation-Interquartile range |
Grade: 9-a Lesson: S2-L1 |
Explanation: The best way to understand statistics is by looking at some examples. Take turns and read each example for easy understanding. |
Examples:
Find out the interquartile range for the given observations 1,11,2,10,3,9,4,8,5,7,6
Step 1a
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Arrange the data in ascending order |
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Explanation: Let us arrange the given observations in ascending order i.e, 1,2,3,4,5,6,7,8,9,10,11. |
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Step 1b
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Find out the median |
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Explanation: median = 6 1,2,3,4,5 → first half 7,8,9,10,11 → second half |
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Step 1c
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Calculate the IQR. |
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Explanation: \$Q_1\$=\$3\$ \$Q_3\$=\$9\$ IQR = \$Q_3 -Q_1\$ = 9-3 = 6 |
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