Qualification > Math

help needed..its urgent!!!!histograms

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astarmathsandphysics:
Then it is the scale times all the frequency densities by 2.5 to get the height.

Ghost Of Highbury:
ohh..
k..
tks
 :)

chaosking:
its quite simple. First make sure that the data is continuous which in your question is i.e when ir say 10<x<15, the next one shud also start with 15 i.e 15<x<25. Then make sure that the class width is equal i.e 15-10 or watever. If class width is equal u plot the frequency and if not then u plot the frequency density which is

Frequency Density=Frequency divided by class width

Ghost Of Highbury:
u gotta multiply it with th standard width too...
i.e 2.5

astarmathsandphysics:
ok.

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