Question

write the size of the class interval 90-100​

Answer 1

Question ⤵️

write the size of the class interval 90-100.

Answer ⤵️

⇒ Classmark=

$\frac{2}{Lowerlimit+Upperlimit}$

⇒ Given class interval is 50−60

⇒ Lower limit =50 and upper limit =60

∴ Classmark=

$\frac{50 + 60}{2}$

$= \frac{110}{?}$

=55

∴ The class mark of class onterval 50−60 is 55.

Hope it helps you ✌️

Step-by-step explanation:

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Answer 2

Answer:

10

Step-by-step explanation:

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