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Maths, Addmaths and Statistics: Post your doubts here!

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Total frequency=25
Half=12.5 which is rounded off to 13 cuz it is halved from an odd number and is in decimals.
Check in which class is the total up to 13. in 0 class it is 8 so thats not median.In 1 class it is 8+5=13 so 1 class includes this middle value and is median

understand?
Yo! =p

Thanks. :D
Give me a similar question. I want to assess myself. :c
 
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You can suppose the first point to be (0,0) and add the column vector to this, to get the next point. Then use those two points to find gradient.
Then do the same for the other vector.
If the product of gradients is -1, they are perpendicular.
I was thinking the same thing,but i though what to do if they give vectors like 3a or 2b....if vector in column is given we can find.
 
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