Find the lower and upper limit of the first class with the class mark 15,25,35,45,55
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1
Step-by-step explanation:
The class marks are uniformly spread.
The class size is the difference between anty two consecutive class marks.
Class size
= 25 - 15
= 10
The lower limit of the first class = 15-10/2
= 15 - 5
= 10
The upper limit of the first class= 15+10/2=
15 + 5=20
Thus, the first class interval is 10 - 20
Similarly, we can find the class limits of all the class marks given.
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Answer:
10 and 20
Step-by-step explanation:
Generally, class mark is middle value of the class
Therefore
middle value of 10 and 20 = 15
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