anonymous
  • anonymous
Will give medal! The following histograms show the average number of hours two groups of students spend cycling every week:
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
anonymous
  • anonymous
Which statement best compares the median number of hours that the two groups of students spend cycling every week? Median is between 4 and 5 hours for both groups. Median is between 5 and 6 hours for both groups. Median for group A is significantly less than the median for group B. Median for group A is significantly greater than the median for group B.
anonymous
  • anonymous
@Hero

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anonymous
  • anonymous
@amistre64
anonymous
  • anonymous
@jagr2713
amistre64
  • amistre64
what is your work?
anonymous
  • anonymous
well I've found the median for both groups.
anonymous
  • anonymous
for group one its between 1-2 and 6-7 which is 2 and for group 2 its between 6-7 and 7-8 which is 1
amistre64
  • amistre64
im still pondering on how to appraoch the median, i have an idea ... how did you approach it?
anonymous
  • anonymous
well I used the groups of numbers for the hours in order of the number of students.
amistre64
  • amistre64
would you say that there are 21 students in each group?
anonymous
  • anonymous
anonymous
  • anonymous
yes
amistre64
  • amistre64
21/2 = 10.xxx so we want the 11th value in each case, right?
anonymous
  • anonymous
yes
amistre64
  • amistre64
start from the left, and count up and then over and up until we get to the 11th position what is our values for each case?
anonymous
  • anonymous
what do you mean by case?
amistre64
  • amistre64
group A, group B .. each is a case ...
anonymous
  • anonymous
ah ok
anonymous
  • anonymous
1'm confused
anonymous
  • anonymous
what am 1 supposed to be doing?
anonymous
  • anonymous
sorry 1'm really bad at math
amistre64
  • amistre64
counting of course ..
amistre64
  • amistre64
where does 11 fall? 2+8+1, gets us in the third bar 3+8 , gets us in the second bar
anonymous
  • anonymous
still confused
anonymous
  • anonymous
what did you get for the median?
amistre64
  • amistre64
4.5
anonymous
  • anonymous
okay how?
amistre64
  • amistre64
A 1.5 1 1.5 2 3.5 3 3.5 4 3.5 5 3.5 6 3.5 7 3.5 8 3.5 9 3.5 0 4.5 1 <<<<< 4.5 0 4.5 9 4.5 8 4.5 7 5.5 6 5.5 5 5.5 4 5.5 3 6.5 2 6.5 1 B 3.5 1 3.5 2 3.5 3 4.5 4 4.5 5 4.5 6 4.5 7 4.5 8 4.5 9 4.5 0 4.5 1 <<<<< 4.5 0 5.5 9 5.5 8 5.5 7 5.5 6 5.5 5 5.5 4 5.5 3 6.5 2 7.5 1
anonymous
  • anonymous
where did all the decimals come from?
amistre64
  • amistre64
we know 21/2 = 10.xxx so we want the 11th value, the one in the middle so we count the decimals are just halfway points so we know where were at instead of saying 4-5 we just have 4.5
anonymous
  • anonymous
ah 1 get i now
anonymous
  • anonymous
so it would be A?
amistre64
  • amistre64
yeah, A is fine for me
anonymous
  • anonymous
Thanks!
amistre64
  • amistre64
yw

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