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Mathematics: Post your doubts here!

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Could you please tell me how to use the Graphic Display Calculator to find the line of regression.





x - 55 29 40 45 65 80 60
y - 30 46 35 27 20 15 25
 
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GUYS PLEASE HELP![/quote.

alright..... so you first find out the ratio between the value shown on the table and the length of the histogram... it would be 5.... notice that 14/5 gets you 2.8

therefore, for the first one you do 5/5, then 29/5 and then you will get your answers

hope this helps
 
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This is part A) I asked B) , thanks anyways
Oh sorry, this is b) i) similar ii) since they are both similar, the scale factor of length squared = scale factor of area . So, x = 49 x 20 / 100 = 9.8 iii) Area = 0.5 x base x height. You have the area and base, if you solve for height you will get 4. Sorry again
 
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