Question

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

(i'll attach image below)

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

The range of each round is the same.

There is no overlap between the data.

Round 1 scores were higher than round 2 scores.

Round 2 scores were lower than round 1 scores.

Answer 1

@jim_thompson5910 could you help?

Answer 2

let me think

Answer 3

ok.

Answer 4

ok lets go the options one by one

Answer 5

ok

Answer 6

what is the range of the "round 1" data?

hint: range = max - min

Answer 7

um....sorry im not sure how to solve that

Answer 8

what is the largest data value in round 1?

look for the dot that is farthest to the right

Answer 9

oh its 8

Answer 10

yes, how about the min?

Answer 11

its 5

Answer 12

so range = max - min = 3

that's for round 1. What is the range of round 2?

Answer 13

its 2 right?

Answer 14

what's the largest value in round 2?

Answer 15

9

Answer 16

smallest value?

Answer 17

6???

Answer 18

yes, so the range in round 2 is max - min = 9-6 = 3

Answer 19

so they are the same

Answer 20

both rounds have the same range, so choice A is part of the answer. There may be other statements that are true though, so we'll need to check them all

Answer 21

got it, thx for your help!

Answer 22

is `There is no overlap between the data.` true or false? why?

Answer 23

i'm not even sure what that means to be honest.

Answer 24

are there any shared values in the two rounds? any repeated values?

Answer 25

oh, no there isnt

Answer 26

you sure? 6 is found in round 1, same for round 2

Answer 27

so is 8

Answer 28

oh yea...

Answer 29

and i know c and d or obviously wrong so its A right

Answer 30

so `There is no overlap between the data.` is a false statement because there is overlap

Answer 31

yup.

Answer 32

yes you are correct, the final answer is A

Answer 33

thx! you taught me so much already :D

Answer 34

you're welcome