Box and Wisker (2 Viewers)

[Paj20]

Does the interquartie range in box and wiskers represent 50% of the data.. and each side of the median in that range 25%?

 

[wixxy2348]

yup.

 

[Paj20]

yup.

http://community.boredofstudies.org/attachment.php?attachmentid=16869&d=1217840926


how do you do q 28 (B) (I) i dont get how the angle is 96 degrees.

 

[-tal-]

http://community.boredofstudies.org/attachment.php?attachmentid=16869&d=1217840926


how do you do q 28 (B) (I) i dont get how the angle is 96 degrees.

solution and working + diagram in the attachment.

 

[Paj20]

solution and working + diagram in the attachment.

thanks heaps... you dont happen to have the answers to the whole thing do u??


and in that.. does that mean angle A is 18 degrees?

 

[-tal-]

thanks heaps... you dont happen to have the answers to the whole thing do u??


and in that.. does that mean angle A is 18 degrees?

No, it doesn't, because you have to find the small angle that A makes with C, then add that to the 18.

Do you want me to find A?

Hmm.. maybe it's better I look at the question again.

 

[Paj20]

No, it doesn't, because you have to find the small angle that A makes with C, then add that to the 18.

Do you want me to find A?

hmmm i thought it was just 90-72 because it is on the north

 

[-tal-]

ii) You can use the cosine rule here.

AC² = AB² + BC² - 2(AB)(BC)CosB
AC² = 300² + 400² - 2(300)(400)Cos 96
AC² = 275086.8312
AC = 524m (nearest m)

iii) Then, since you have AC, you can use the sine rule.

sin 96/524 = sin BCA/400
400 sin 96/524 = sin BCA
BCA = 49 degrees, 24 min (nearest min)

Forgot to find bearing.

Sorry for the long reply. Went to eat.

 

[-tal-]

Rest of the question is here.

 

[Paj20]

Rest of the question is here.

How did you get blue to equal 49 24' !!?????

 

[-tal-]

How did you get blue to equal 49 24' !!?????

iii) Then, since you have AC, you can use the sine rule.

sin 96/524 = sin BCA/400
400 sin 96/524 = sin BCA
BCA = 49 degrees, 24 min (nearest min)

 

[Paj20]

iii) Then, since you have AC, you can use the sine rule.

sin 96/524 = sin BCA/400
400 sin 96/524 = sin BCA
BCA = 49 degrees, 24 min (nearest min)

ohh yes... i see.. i used the cosine rule because there was 3 sides


kk Thanks.