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The number of times an observation occurs in a data is called its
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 '.
In the class- interval 70-80, 80 is the
Upper limit is the highest number of the interval. Hence 80 is the upper limit.
The class mark of 95-100 is
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 and lower limit is called
Class Size: Difference between the true upper limit and true lower limit of a class interval is called the class size.
Class size remains the same for all class intervals.
For the class interval 10 - 20
Class size is 10, i.e., (20 - 10 = 10)
The shape of a pie-chart is
A pie chart is circular in shape which uses pie slices to show relative sizes of data
The pie-chart is divided into
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.
18 out of 36 people love reading, so reading in the pie chart will be represented by
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
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.