Date: 09/17/2002 at 18:55:53 From: Brandon Dunbar Subject: Frequency table How do I make a frequency table using temperatures and days of the week? I put the days of the week in a row and then put the temperature for each day next to it, but it does not seem right to me. Thank you for your help.
Date: 09/18/2002 at 10:33:21 From: Doctor Ian Subject: Re: Frequency table Hi Brandon, You're trying to relate three things, so this isn't going to be a typical frequency table, which would only relate two: Histogram http://mathforum.org/library/drmath/view/57612.html But you might try a different approach. Make a table with days of the week across the top and various temperatures down the side: S M T W T F S 51-55 56-60 61-65 66-70 71-75 76-80 81-85 86-90 91-95 96-100 Then whenever you get a certain temperature on a certain day, you can increment the count in the corresponding cell of the table. For example, if it's Tuesday, and it's 73 degrees, you'd have S M T W T F S 51-55 56-60 61-65 66-70 71-75 1 76-80 81-85 86-90 91-95 96-100 The next time that happens, you'd increment it: S M T W T F S 51-55 56-60 61-65 66-70 71-75 2 76-80 81-85 86-90 91-95 96-100 The trick with something like this is to make it easy to spot patterns. For example, you might display the table using colors to indicate the number of hits in each cell - for example, 0 would be white, the maximum value for the table would be solid black, and various shades of gray would represent values in between. Or you could use different shapes to represent different ranges of frequencies (triangle for 0-10 hits, square for 11-20, pentagon for 21-30, and so on). I hope this helps. Write back if you'd like to talk more about this, or anything else. - Doctor Ian, The Math Forum http://mathforum.org/dr.math/
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