Test: Data Handling- 1 - Class 8 MCQ

The frequency  of a particular data value is the number of times the data value occurs. For example, if four students have a score of 80 in mathematics, and then the score of 80 is said to have a frequency of 4. The  frequency of a data value is often represented by ' f '.

Upper limit is the highest number of the interval. Hence 80 is the upper limit.

Class mark is the midpoint of the upper and lower limits.
so for the given problem;

the class mark is
[ (95+100)÷2 ] = 97.5 
Thus class mark is 97.5

The difference between the upper limit and the lower limit of the class interval is called class size.

A pie chart is circular in shape which uses pie slices to show relative sizes of data

 A pie chart is a circular chart divided into wedge-like sectors, illustrating proportion. Each wedge represents a proportionate part of the whole, and the total value of the pie is always 100 percent. Pie charts can make the size of portions easy to understand at a glance.

The central total angle in a pie chart is:

• The correct answer is C: 360°.
• A pie chart represents data in a circular format, where the entire circle makes up 100% of the data.
• A full circle has an angle of 360 degrees.
• Each segment or "slice" of the pie chart corresponds to a part of the total 360°.

When we find the central angle on pie chart we get 18/36 * 360 =180 degree, which is half of complete angle 360. so people loveing reading can be represented by semi circular 

The size of class intervals, also known as class width, is the difference between the upper limit of one class and the lower limit of the next class. 
For example, taking the first two class intervals from the table:

• For the interval 0 – 10, the lower limit is 0.
• For the next interval 10 – 20, the lower limit is 10.

Subtracting these:

10 (lower limit of the second interval) - 0 (lower limit of the first interval) = 10

Therefore, the size of the class intervals in the table is 10.

20 has the highest frequency as option b because as you have seen and frequency table the highest frequency is friendly only so it shows that it has the highest frequency and don't you feel bad I may tell you one thing this thing should not be asked you know these are very easy and you can see just a frequency table.