Question

FAN AND MEDAL
The dot plots below show the test scores of seventh- and eighth-grade students:

Answer 1

Based on visual inspection of the dot plots, which grade, if any, appears to have the higher mean score?

Grade 7
Grade 8
Both groups show about the same mean score.
No conclusion about mean score can be made from the data.

Answer 2

@GreatGuy

Answer 3

Note that one group as a number of scores of 90 while the other does not

Answer 4

add all the numbers and divide by how many there is.

Answer 5

yes

Answer 6

also one group has some scores in 50's and the other has none -

Answer 7

both groups have 20 members

Answer 8

thanks

Answer 9

group 7 has the hightest mean
group 7 2355
group 8 1808

Answer 10

as you can see - grade 7 marks have a quite similar spread of marks but they are translated up 10 marks compared with grade 8

Answer 11

yw