Lesson Example Discussion Quiz: Class Homework |
Step-4 |
Title: Measures of variation-Interquartile range |
Grade: 9-a Lesson: S2-L1 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Find the interquartile range from marks of students in English |
|
2 |
Step |
Arrange the numbers in ascending order |
49,51,52,54,58,91,92,93,94,97,100 |
3 |
Step |
Divide the data to identify quartiles |
49,51,52,54,58 → first half , 92,93,94,97,100 → second half ,median → 91 |
4 |
Step |
Identify the \$Q_1\$ from first half |
\$Q_1\$ = 52 |
5 |
Step |
Identify the \$Q_3\$ from second half |
\$Q_3\$ = 94 |
6 |
Formula: |
IQR = \$Q_3 -Q_1\$ |
|
7 |
Step |
Substitute the above values and solve |
94 - 52 = 42 |
8 |
Answer |
B |
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Tutor: Questions
| Seq | Type | Question | Audio |
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1 |
Problem |
What did you learn from this problem? |
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2 |
Clue |
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3 |
Hint |
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4 |
Step |
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5 |
Step |
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