xxImHisGirlxx
  • xxImHisGirlxx
Help.
Mathematics
jamiebookeater
  • jamiebookeater
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xxImHisGirlxx
  • xxImHisGirlxx
14. How many tests did the student take during their junior year in high school? (1 point) 100 37 66 *** my answer 29
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anonymous
  • anonymous
I got 66 too
xxImHisGirlxx
  • xxImHisGirlxx
15. What is the width of each bin? (1 point) 10 1 5 The width varies. * my answer (using same graph)

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anonymous
  • anonymous
what does it mean of each "bin"
xxImHisGirlxx
  • xxImHisGirlxx
@thomaster @jim_thompson5910 @amistre64
xxImHisGirlxx
  • xxImHisGirlxx
I honestly have no clue @emily_wilson
anonymous
  • anonymous
well if its for the bar graph then i would say 10
xxImHisGirlxx
  • xxImHisGirlxx
16. Which class has the highest frequency? (1 point) 80 80–89 90 The answer cannot be determined. * my answer
xxImHisGirlxx
  • xxImHisGirlxx
17. What is the cumulative frequency of the green bar? (1 point) 0.15 15 * my answer 25 22
xxImHisGirlxx
  • xxImHisGirlxx
these are my last two questions on the same graph
anonymous
  • anonymous
I would agree on both
xxImHisGirlxx
  • xxImHisGirlxx
Do the answers look right? @amistre64
amistre64
  • amistre64
the last 2 seem to have issues.
xxImHisGirlxx
  • xxImHisGirlxx
What are the issues?
amistre64
  • amistre64
what is your defiintion of a cumulative frequency?
xxImHisGirlxx
  • xxImHisGirlxx
I'm not really sure what it is..
amistre64
  • amistre64
then what is your best guess at its definition?
xxImHisGirlxx
  • xxImHisGirlxx
it's the total of something?
amistre64
  • amistre64
yes, the total of all that has gone before ... https://www.mathsisfun.com/definitions/cumulative-frequency.html
anonymous
  • anonymous
its the running total
amistre64
  • amistre64
and i would say that a class is defined by its width, so there is an answer for the other one as well
xxImHisGirlxx
  • xxImHisGirlxx
is 17, A?
xxImHisGirlxx
  • xxImHisGirlxx
@amistre64
amistre64
  • amistre64
what is the sum of the first 3 'bins'?
xxImHisGirlxx
  • xxImHisGirlxx
3 7 and 15
amistre64
  • amistre64
add them up
xxImHisGirlxx
  • xxImHisGirlxx
25?
amistre64
  • amistre64
that looks better yes
xxImHisGirlxx
  • xxImHisGirlxx
okay, now what about for question 16?
amistre64
  • amistre64
well, since a class is defined by its width ... how would you consider naming the class with the highest frequency?
xxImHisGirlxx
  • xxImHisGirlxx
I think it's B?
amistre64
  • amistre64
the class (80 to 90) on the graph does have the highest bar ... so if im reading it correctly, i would go with the B option.
xxImHisGirlxx
  • xxImHisGirlxx
15. What is the width of each bin? (1 point) 10 1 5 The width varies. Does 10 look right for this?
amistre64
  • amistre64
id go with 10 yes. but just as an educated guess. the width of each does not vary, and not of them are 1 or 5 ...
xxImHisGirlxx
  • xxImHisGirlxx
13. If this data were put into a bar graph, which of the following would be true regarding the shape of the graph? (1 point) It would be skewed left. It would be skewed right. It would be bell-shaped. There is not enough information to tell.
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xxImHisGirlxx
  • xxImHisGirlxx
I think that ones D
amistre64
  • amistre64
the shape would resemble the outline of the charts right hand side ... if that makes any sense. each digit tends to take up the same space as a single unit ... if we turn it to the left, and trace over the edge we get:
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xxImHisGirlxx
  • xxImHisGirlxx
So, A?
amistre64
  • amistre64
the resulting effect is a not bell shaped, but skewed
amistre64
  • amistre64
skews to the small end, so yes, to the left in this case
xxImHisGirlxx
  • xxImHisGirlxx
Thank you so much!
amistre64
  • amistre64
the skew refers to the mean, and how the outliers effect it instead of being over there with most of the data, the tail pulls the mean away from it.
amistre64
  • amistre64
good luck

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