Hesan
  • Hesan
35,40,75,38,39,37,80,85,40,65,67,70,30,39,42,56 59,78,36 what will be the class width of that data and how to calculate it????
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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amistre64
  • amistre64
calss width is subjective; it depends on how many classes you want to put it in
amistre64
  • amistre64
take the range and divide it by how many classes you want
amistre64
  • amistre64
highest - lowest ------------- = class width (round up if a decimal) #of classes

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Hesan
  • Hesan
First we have to calculate the range
amistre64
  • amistre64
right, which is just high - low
amistre64
  • amistre64
or low - high and strip the negative
Hesan
  • Hesan
and then divide the anser by any of the Number which is divisible
amistre64
  • amistre64
sort {....} in wolfram helps :)
Hesan
  • Hesan
But if the answer of the range is any prime number such as 59 then.....
amistre64
  • amistre64
http://www.wolframalpha.com/input/?i=sort+%7B35%2C40%2C75%2C38%2C39%2C37%2C80%2C85%2C40%2C65%2C67%2C70%2C30%2C39%2C42%2C56%2C+59%2C78%2C36%7D 30 to 85
amistre64
  • amistre64
so we are at 55 range, whats our # of classes? tends to be between 5 and 20
Hesan
  • Hesan
What i can't understand it..... Plz explain
amistre64
  • amistre64
i did explain. range/class# = class width i found the range, whats our number of classes?
Hesan
  • Hesan
if we take 59 as 60. as it is little bit greater than 59 and than divide it .So it is Right.....
Hesan
  • Hesan
Actually i am talking about the prime number.... Because it is easy to dive the number such as 28 , 86 , 70 etc
amistre64
  • amistre64
im not familiar with any prime number method.
amistre64
  • amistre64
must be text specific to your course i spose
Hesan
  • Hesan
Yeh u r right
Hesan
  • Hesan
Suggest me a site for that...
amistre64
  • amistre64
http://www.emathematics.net/tablas.php?tipo=tabla2 is more along what im used to
Hesan
  • Hesan
Thanks..
amistre64
  • amistre64
hope it helps :)

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