Question

The dot plots below show the test scores of sixth- and seventh-grade students:

Answer 1

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

Grade 6
Grade 7
Both groups show about the same mean score.
No conclusion about mean score can be made from the data.

Answer 2

@Loser66

Answer 3

grade 6 right? @Loser66

Answer 4

why?

Answer 5

cause it seems to have more dots on the higher numbers

Answer 6

grade 6 is correct but the reason is not. grade6 starts from 70 and ends at 100, while grade7 starts from 50 and ends at 80
That is the reason why the mean of grade6 is higher than grade7

Answer 7

i get it thank u! ^_^