Lesson Example Discussion Quiz: Class Homework |
Step-1 |
Title: Mode for grouped data |
Grade: 9-a Lesson: S1-L6 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
From the given observations.Find the mode |
|
2 |
Step |
From the above table |
14 is maximum class frequency |
3 |
Step |
Finding modal class |
\$55-64\$ |
4 |
Step |
Lower limit of modal class |
\$l = 55\$ |
5 |
Step |
class size |
\$h = 64 - 55 = 9\$ |
6 |
Step |
Frequency of the modal class |
\$f_1 = 14\$ |
7 |
Step |
Frequency of the preceding class of modal class |
\$f_0 = 10\$ |
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 = \$55 + (14 - 10)/(2(14) - 10 - 8) × 9\$ |
11 |
Step |
Simplification |
= \$55 + 4/(28 - 18) × 9\$ |
12 |
Step |
Simplification |
= \$55 + 4/10 × 9\$ |
13 |
Step |
simplification |
\$55 + 0.4 × 9\$ |
14 |
Step |
After simplication |
= \$55+3.6\$ |
15 |
Step |
After addition |
\$58.6\$ |
16 |
Answer |
B = 58.6 |
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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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