Frequency Density and Class Width

The video tutorial explains how to determine class width and frequency density, even when frequency density is not provided. It walks through the process of calculating frequency density using examples, emphasizing the importance of understanding the relationship between frequency and class width. The tutorial concludes with practical tips for exams, advising against shading in diagrams.

What is the first step in solving the problem of finding class width and frequency density?

• Identify the class width and frequency density.

• Find the median of the data.

• Determine the mode of the data.

• Calculate the mean of the data.

What is the class width for the first class?

• 5

• 10

• 20

• 15

How do you calculate frequency density?

• Class width divided by frequency

• Frequency divided by class width

• Frequency plus class width

• Frequency multiplied by class width

What is the frequency density for the first class if the frequency is 4 and class width is 10?

• 0.2

• 0.4

• 0.6

• 0.8

What is the class width for the second class?

• 10

• 15

• 5

• 20

If the class width is 10 and the frequency is 10, what is the frequency density?

• 1

• 0.5

• 2

• 1.5

What is the class width for the third class?

• 20

• 10

• 5

• 15

If the class width is 5 and the frequency is 6, what is the frequency density?

• 1.4

• 1.6

• 1.2

• 1.0

What should you avoid doing in your exam according to the final remarks?

• Drawing diagrams

• Writing in pencil

• Shading the graph

• Using a calculator

What is the importance of calculating frequency density?

• To determine the mode

• To understand data distribution

• To calculate the median

• To find the mean