4. The dot plots below show the number of minutes random groups of Grade 6, and Grade 7, students spend
on personal hygiene in the mornings.
Grade 6
Grade 7
5
10
30
35
5
10
30
35
15 20 25
Minutes
15 20 25
Minutes
Which statement is supported by the information in the box plots above?
А
Grade 7 has a larger spread in the number of minutes they spend on personal hygiene than
Grade 6 has in the number of minutes they spend on personal hygiene.
B
Grade 7 has a center of 20 minutes and Grade 6 has a center of 30 minutes.
Grade 6 has more students spending 15 to 25 minutes on personal hygiene than Grade 7 has
students spending 15 to 25 minutes on personal hygiene.
Grade 6 has more than half of the students spending 25 or more minutes on personal hygiene
while Grade 7 has more than half of the students spending 30 or more minutes on personal
hygiene.