Help.

- xxImHisGirlxx

Help.

- jamiebookeater

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- 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

I got 66 too

- 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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## More answers

- anonymous

what does it mean of each "bin"

- xxImHisGirlxx

@thomaster @jim_thompson5910 @amistre64

- xxImHisGirlxx

I honestly have no clue @emily_wilson

- anonymous

well if its for the bar graph then i would say 10

- xxImHisGirlxx

16. Which class has the highest frequency? (1 point)
80
80–89
90
The answer cannot be determined. * my answer

- xxImHisGirlxx

17. What is the cumulative frequency of the green bar? (1 point)
0.15
15 * my answer
25
22

- xxImHisGirlxx

these are my last two questions on the same graph

- anonymous

I would agree on both

- xxImHisGirlxx

Do the answers look right? @amistre64

- amistre64

the last 2 seem to have issues.

- xxImHisGirlxx

What are the issues?

- amistre64

what is your defiintion of a cumulative frequency?

- xxImHisGirlxx

I'm not really sure what it is..

- amistre64

then what is your best guess at its definition?

- xxImHisGirlxx

it's the total of something?

- amistre64

yes, the total of all that has gone before ...
https://www.mathsisfun.com/definitions/cumulative-frequency.html

- anonymous

its the running total

- 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

is 17, A?

- xxImHisGirlxx

@amistre64

- amistre64

what is the sum of the first 3 'bins'?

- xxImHisGirlxx

3 7 and 15

- amistre64

add them up

- xxImHisGirlxx

25?

- amistre64

that looks better yes

- xxImHisGirlxx

okay, now what about for question 16?

- amistre64

well, since a class is defined by its width ... how would you consider naming the class with the highest frequency?

- xxImHisGirlxx

I think it's B?

- 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

15. What is the width of each bin? (1 point)
10
1
5
The width varies.
Does 10 look right for this?

- 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

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.

##### 1 Attachment

- xxImHisGirlxx

I think that ones D

- 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:

##### 1 Attachment

- xxImHisGirlxx

So, A?

- amistre64

the resulting effect is a not bell shaped, but skewed

- amistre64

skews to the small end, so yes, to the left in this case

- xxImHisGirlxx

Thank you so much!

- 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

good luck

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