Lesson Example Discussion Quiz: Class Homework |
Step-3 |
Title: Percentile Range |
Grade: 9-a Lesson: S2-L6 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
The scores for student are 21,24,26,27,28,28,31,32,34,36,39,40,42,44,45,46,49,53,57,60 |
Find out the percentile for score 28 |
2 |
Formula: |
Percentile = \$"Number of values below x" / "Total number of values " \$ × 100 |
|
3 |
Step |
Arrange the data in ascending order |
21,24,26,27,28,28,31,32,34 |
4 |
Step |
Total number of values 'N' = 20, Number of values below '28' = 4 |
|
5 |
Step |
Percentile |
\$4/20\$ × 100 |
6 |
Step |
Simplification |
\$1/5\$ × 100 |
7 |
Step |
After simplification |
\$0.2 × 100 \$ ⇒ 20 |
8 |
Step |
P = 20 |
28 marks point at 20th percentile. |
9 |
Answer |
A |
Tutor: Questions
| Seq | Type | Question | Audio |
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1 |
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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