Lesson Example Discussion Quiz: Class Homework |
Step-5 |
Title: Mode for grouped data |
Grade: 9-a Lesson: S1-L6 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
From the given observations.Find the mode |
|
2 |
Step |
From the above table |
9 is maximum class frequency |
3 |
Step |
Finding modal class |
\$110-119\$ |
4 |
Step |
Lower limit of modal class |
\$l = 110\$ |
5 |
Step |
class size |
\$h = 119 - 110 = 9\$ |
6 |
Step |
Frequency of the modal class |
\$f_1 = 9\$ |
7 |
Step |
Frequency of the preceding class of modal class |
\$f_0 = 7\$ |
8 |
Step |
Frequency of the succeeding class of modal class |
\$f_2 = 8\$ |
9 |
Formula: |
Mode |
\$l + (f_1 - f_0)/(2f_1 - f_0 - f_2) × h\$ |
10 |
Step |
Substitute all the above values and solve |
Mode = \$110 + (9 - 7)/(2(9) - 7 - 8) × 9\$ |
11 |
Step |
Simplification |
\$110 + 2/(18 - 15) × 9\$ |
12 |
Step |
Simplification |
\$110 + 2/3 × 9\$ |
13 |
Step |
simplification |
\$110 + 0.66 × 9\$ |
14 |
Step |
After simplication |
\$110 + 5.94\$ |
15 |
Step |
After addition |
\$115.94\$ |
16 |
Answer |
B |
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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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