Lesson Example Discussion Quiz: Class Homework |
Step-1 |
Title: Karl pearson’s coefficient of skewness |
Grade: 9-a Lesson: S2-L7 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Calculate the following data by using coefficient of skewness. 1,2,3,4,5,6,7,8,9,9 |
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2 |
Hint |
Mean = \$" Sum of the observations "/" total number of observations" \$ |
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3 |
Step |
sum of observations = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 9 |
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4 |
Step |
Number of observations |
10 |
5 |
Step |
Then Mean after simplification is |
\$54 / 10 = 5.4\$ |
6 |
Clue |
Variance = \$(1 - 5.4)^2 + (2 - 5.4)^2 + (3 - 5.4)^2 + (4 - 5.4)^2 + (5 - 5.4)^2 + (6 - 5.4)^2 + (7 - 5.4)^2 + (8 - 5.4)^2 + (9 - 5.4)^2 + (9 - 5.4)^2\$ / 10 - 1 = 7.44 |
|
7 |
Clue |
Standard deviation |
\$\sqrt(7.44) = 2.73\$ |
8 |
Step |
Median |
\$((n/2)^(th) term + (n/2 + 1)^(th) term)/2\$ |
9 |
Step |
simplification according to median |
\$(5 + 6) / 2 = 5.5\$ |
10 |
Step |
Skewness |
sk = \$(Mean - Median) / (sd)\$ |
11 |
Step |
Simplification |
\$5.4 - 5.5 / 2.73\$ |
12 |
Step |
After simplification we get |
- 0.11 |
13 |
Answer |
A |
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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 |
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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