Lesson Example Discussion Quiz: Class Homework |
Step-4 |
Title: Kurtosis |
Grade: 9-a Lesson: S2-L9 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Find Kurtosis for the following data |
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2 |
Step |
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3 |
Formula: |
Kurtosis formula sk = \$(x_i-\bar{x})^4 / ((n-1)s^4)\$ |
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4 |
Step |
Mean |
\$(sum f.x) / (sum x)\$ |
5 |
Step |
simplification |
\$576 / 48\$ = 12 |
6 |
Step |
standard deviation |
\$(sum f(x _i-\bar{x})^2) / (sum f.x)\$ |
7 |
Step |
simplification |
\$\sqrt(48 / 47)\$ = 1.01 |
8 |
Formula: |
Kurtosis formula sk = \$(x_i-\bar{x})^4 / ((n-1)s^4)\$ |
|
9 |
Step |
simplification |
\$(120) / (47(1.01)^4)\$ |
10 |
Step |
simplification |
2.44 |
11 |
Answer |
C |
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Tutor: Questions
| Seq | Type | Question | Audio |
|---|---|---|---|
1 |
Problem |
What did you learn from this problem? |
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2 |
Clue |
What did you learn from the clues? |
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3 |
Hint |
What did you learn from the Hints? |
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4 |
Step |
What did you learn from the Steps? |
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5 |
Step |
How can we improve the Steps? |
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