hockeychick23
  • hockeychick23
Stats help please? The ages of the Oscar-winners for best actor and actress for the years 1970 through 1990 are given below: Women:34,34,26,37,42,41,35,31,41,33,30,74,33,49,38,61,21,41,26,80,72 Men:43,40,48,48,56,38,60,32,40,42,37,76,39,55,45,35,61,33,51,32,42 Discuss apparent difference in the ages of Oscar-winning men and women. Use both a numerical and graphical argument.
Mathematics
  • Stacey Warren - Expert brainly.com
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jamiebookeater
  • jamiebookeater
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hockeychick23
  • hockeychick23
@iGreen could you help me please?
skullpatrol
  • skullpatrol
Any ideas?
skullpatrol
  • skullpatrol
Begin with what the question is asking for.

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hockeychick23
  • hockeychick23
ok thanks, i think i need to find the mean of the data sets of men and women so i got 41.8571428571 as the mean of women and 45.380952381 as the mean of men but i don't know what to do next
skullpatrol
  • skullpatrol
That's a good start :-)
hockeychick23
  • hockeychick23
thanks :) I'm not sure what to do next though :/
skullpatrol
  • skullpatrol
The question asks you to "Discuss apparent difference in the ages", can you see any?
hockeychick23
  • hockeychick23
yea it seems like the mean age of men is older (3.5238095239 years older)
skullpatrol
  • skullpatrol
Ok, that answers the "numerical argument" What about the graphical?
skullpatrol
  • skullpatrol
What does "graphical" mean?
hockeychick23
  • hockeychick23
visualizing quantititive data i believe
skullpatrol
  • skullpatrol
Correct. How do you want to visualize this data?
hockeychick23
  • hockeychick23
would i show the exponential growth in ages on a graph for both men and women?
skullpatrol
  • skullpatrol
How do you know it is exponential?
hockeychick23
  • hockeychick23
oh your right sorry it isn't always exponential, looking at the data it looks like it fluctuates a lot between 1970 and 1990, I'm not quite sure how i would word that
skullpatrol
  • skullpatrol
Yes, now you are getting the idea. We need to study the "fluctuation" graphically.
skullpatrol
  • skullpatrol
Why don't we start by putting the data in increasing numerical order and look for any patterns? Note: we are not told that the data is given in chronological order :(
hockeychick23
  • hockeychick23
ok awesome, thanks! so i got: Women:21,26,26,30,31,33,33,34,34,35,37,38,41,41,41,42,49,61,72,74,80 Men:32,32,33,35,37,38,39,40,40,42,42,43,45,48,48,51,55,56,60,61,76
skullpatrol
  • skullpatrol
Ok, now what?
hockeychick23
  • hockeychick23
would the next step be to find the median of each set?
skullpatrol
  • skullpatrol
Sounds like a good idea :-)
hockeychick23
  • hockeychick23
Ok :) so i got Women: 37 Men: 42
skullpatrol
  • skullpatrol
icic
hockeychick23
  • hockeychick23
sorry what
skullpatrol
  • skullpatrol
You can compare that to the mean you calculated, right? icic = i see, i see
hockeychick23
  • hockeychick23
oh sorry haha :) so i get: women:41.8571428571-37=4.8571428571 men:45.380952381-42 =3.380952381
skullpatrol
  • skullpatrol
Let's return to the ordered list that you made and group together people of the same age and then make a quick histogram.
hockeychick23
  • hockeychick23
ok do i take women:21,26,26,30,31,33,33,34,34,35,37,38,41,41,41,42,49,61,72,74,80 Men:32,32,33,35,37,38,39,40,40,42,42,43,45,48,48,51,55,56,60,61,76 and subtract 80-21 for the interval of women and 76-32 for the interval of men?
skullpatrol
  • skullpatrol
Yes.
hockeychick23
  • hockeychick23
ok so i got 59 as the interval of women and got 44 for the interval of men. I tried to create a histogram online but i don't think it took the data correctly, it looks like this:
1 Attachment
skullpatrol
  • skullpatrol
Try doing it by hand first.
hockeychick23
  • hockeychick23
ok
hockeychick23
  • hockeychick23
i drew the histogram of the data and it seems like the majority of women are in their 30s and the majority of men are in their 40s
hockeychick23
  • hockeychick23
thats where i got the highest percentile
skullpatrol
  • skullpatrol
Good job, summarize your work and hand it in :D
hockeychick23
  • hockeychick23
ohh wow thanks! so i can just say "the numerical argument is: the mean of the data sets of men and women so i got 41.8571428571 as the mean of women and 45.380952381 as the mean of men and the mean age of men is older (3.5238095239 years older) graphical argument: this is visualizing quantitative data;the data fluctuates between 1970 and 1990 the median of women is 37 and median of men is 42. Comparing this to the mean I get: women:41.8571428571-37=4.8571428571 and men:45.380952381-42 =3.380952381. 59 is the interval of women and 44 is the interval for men. " Graphically: "The majority of women are in their 30s and the majority of men are in their 40s, this is where i get the highest percentile. "
skullpatrol
  • skullpatrol
I would only use two decimal places in your values :-)
skullpatrol
  • skullpatrol
Also, draw a neatly labeled histogram and show where on the graph the mean and median are located.
hockeychick23
  • hockeychick23
ok thank you so much!!
skullpatrol
  • skullpatrol
It is important for you to state that as we said "Note: we are not told that the data is given in chronological order"
hockeychick23
  • hockeychick23
ok thanks!
skullpatrol
  • skullpatrol
Thanks for trying to learn :)

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