Question

WILL GIVE BRAINLIEST!! The dot plots below show the ages of students belonging to two groups of salsa classes:

Answer 1

Based on visual inspection,Group B most likely has a lower mean age of salsa student.

As we can see from the dot plot, the age of Group A is evenly distributed at different age,however Group B has a tendency of having more students at lower age below 17.

While Group A has 13 students who are above or at the age of 17, only 2 students in Group B is above 17.

Although in Group A there are very young students, the students who are at very old age are likely to pull up the mean age. Therefore, group B is more likely to have a lower mean age.



To check if it is correct:

Mean age of Group A
=(3x5 + 4x10 + 6x17 + 4x24 + 3x28)÷(3+4+6+4+3)
=337÷20
=16.85

Mean age of group B
= (6x7 + 3x10 + 4x14 + 5x17 + 2x22)÷(6+3+4+5+2)
=257÷20
=12.85

Therefore, 12.85(Group A) < 16.85(Group B), the answer is Group B.

Hope it helps!

Answer 2

Answer:

only answered so the other person will get Brainliest.

Step-by-step explanation: