✔ The denominator determines the weight of the adjustment factor.
Q3. What must be done if class intervals are discontinuous?
✔ Mode formula requires continuous class intervals for accurate boundaries.
Show transcript
[Slide 1] Understanding Mode in Groups
Hello students. Today we find the mode for grouped data. Since exact values are hidden, we estimate it using the modal class.
[Slide 2] The Mode Formula
This formula helps estimate the mode. L is lower limit, h is class width. F1 is the highest frequency among neighbors.
[Slide 3] Example Setup
Consider a table where class 20 to 30 has the highest frequency. We identify the lower limit and class size here.
[Slide 4] Step-by-Step Calculation
Now substitute the frequency values into the equation. Solve the fraction first, then multiply by class size.
[Slide 5] Common Mistakes to Avoid
A common error is swapping the frequencies before and after. Also, make sure your class intervals are continuous.
[Slide 6] Final Recap
To summarize, find the modal class and apply the formula. Practice this method to score well in your boards.