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Maths Question

Guest Mar 28, 2018
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 #1
avatar+85673 
+1

We can use a weighted average here  =

 

[ sum of  freq* mipoint ] / [sum of freq ]  \

 

[  (1*5) + (4*15)  + (7 * 25)  + (2 * 35)  + (3 * 45)  + (3 * 55)

_______________________________________________

     [ 1 + 4 + 7 + 2 + 3 + 3 ]

 

[  610 ]

______

   20

 

 

30.5  cm  =  mean height of the plant

 

 

cool cool cool

CPhill  Mar 28, 2018
 #2
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Can You help me with this question too

Guest Mar 28, 2018
 #3
avatar+85673 
+1

30  out of 40 dislike the new start time  = 3/4

 

So....we would expect that   (3/4)*1000  =  750  to dislike it

 

 

cool cool cool

CPhill  Mar 28, 2018

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