Question

Need Someone Gr8 at Math

Answer 1

The dot plots below show the scores for a group of students for two rounds of a quiz:

Answer 2

Which of the following inferences can be made using the dot plots?

There is no overlap between the data.
The range of each round is the same.
Round 1 scores are higher than round 2 scores.
Round 2 scores are lower than round 1 scores.

Answer 3

2

Answer 4

I believe this is showing the frequency # number of instances each score appears.

Answer 5

What do you mean?

Answer 6

so it's how many times a score appears in each round

Answer 7

But how do o fond my answer

Answer 8

@Photon336

Answer 9

so for round 1 how many of those dots are under a score of 4?

Answer 10

6

Answer 11

Am I correct?

Answer 12

He
Looo?

Answer 13

yep now each one is four so there are 24 points in 4. for round 1 what about 5 in round 1 too?

Answer 14

2

Answer 15

Once you find the number of points in round 1 and 2, you can easily eliminate two choices.

Answer 16

so @mathrocks2020 so what are the total number of points for round 1

Answer 17

8

Answer 18

Round #1 6*4 = 24+ (5*2) = 24+10 = 34

Answer 19

Still confused on how u got 6*4

Answer 20

@Photon336 still don't understand how u got 6*4

Answer 21

you see that there are six dots right?

Answer 22

Oh did u multiply it with the collum it is in?

Answer 23

yep.

Answer 24

Silly me

Answer 25

so the score for each one of those is 4

Answer 26

Ok

Answer 27

now i went over to 5 and did the same thing. there are two dots each with a score of 5 so i did 5*2 = 10

now to get the total number of points for round one I did

24+10 = 34

Answer 28

I see

Answer 29

Should I try round 2?

Answer 30

now try finding the score for the next round for me

Answer 31

Round 2:4*4=16+(5*4)=20

16+20=36?

Answer 32

alright great so now.

Round 2 = 36
Round 1 = 34

knowing this, now what two choices can you eliminate?

let's go to the choices:

There is no overlap between the data.
The range of each round is the same.
Round 1 scores are higher than round 2 scores.
Round 2 scores are lower than round 1 scores

Answer 33

@Photon336 pls don't go:(

Answer 34

i'm still here

Answer 35

@mathrocks2020

are the scores from Round 2 scores lower than round 1 scores?

Round 2 36
Round 1 34

Answer 36

No

Answer 37

we can eliminate that answer choice

Answer 38

What about this: Round 1 scores are higher than round 2 scores.

Answer 39

Yes then can be eliminated

Answer 40

yep great

Answer 41

last two choices we have are these:

There is no overlap between the data.
The range of each round is the same.

Answer 42

now do you know what the range is?

Answer 43

No

Answer 44

the range is the highest value in our data set minus the lowest number

Answer 45

for round 1 the highest number is 5 and the lowest is 4 so 5-4 = 1

what about round 2?

Answer 46

5-4=1

Answer 47

yep so we know that's true.

Answer 48

Yes

Answer 49

now the other choice "There is no overlap between the data". is false because there is overlap, the number of data points in both sets are the same so there is overlap.

Answer 50

Indeed

Answer 51

So the answer is the range of each data is the same?

Answer 52

yeah it should be the one that makes the most sense.

Answer 53

Thanks