For class interval $20 - 25$ , write the lower class limit and the upper class limit.

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Solution

Given class interval $20 - 25$
$∴$ lower class limit $\to 20$
upper class limit $\to 25$

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If the class mark of a class interval is 25, then the sum of its lower and upper class limits is

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Fill in the blanks :
(i) Lower class limit of 15-18 is ___ .
(ii) Upper class limit of 24-30 is ___.
(iii) Upper limit of 5-12.5 is ___.
(iv) If the upper and the lower limits of a class interval are 16 and 10; the class interval is ___.
(v) If the lower and the upper limits of a class interval are 7.5 and 12.5; the class interval is ___.

Under Exclusive method,

(a) the upper class limit of a class is excluded in the class interval

(b) the upper class limit of a class is included in the class interval

(d) the lower class limit of a class is included in the class interval

Q. The lower limit and upper limit of an exclusive class interval are

15

and

25

respectively. Then the class mark is _____

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For class interval 20−25, write the lower class limit and the upper class limit.

Given class interval 20−25∴ lower class limit →20upper class limit →25

For class interval $20 - 25$ , write the lower class limit and the upper class limit.

Given class interval $20 - 25$
$∴$ lower class limit $\to 20$
upper class limit $\to 25$