Question

PLSS!! NEED HELP!! DUE IN 36 MINUTES!!!
The dot plots below show the ages of students belonging to two groups of music classes:

A dot plot shows two divisions labeled Group A and Group B. The horizontal axis is labeled as Age of Music Students in years. Group A shows 5 dots at 6, 5 dots at 8, 3 dots at 9, 7 dots at 11, and 5 dots at 13. Group B shows 2 dots at 6, 4 dots at 10, 4 dots at 13, 3 dots at 15, 5 dots at 16, 4 dots at 19, and 3 dots at 21. (attached image)

Based on visual inspection, which group most likely has a lower mean age of music students? Explain your answer using two or three sentences. Make sure to use facts to support your answer.

Answer 1

Answer:

Group a

Step-by-step explanation:

to find the mean you must add all the numbers then divide by the amount of numbers so

group A is 25

group B is 25

now we add them which is 50

then divide which is 2

Answer 2

Based on visual inspection, group A most likely has a lower mean age of music students.

What is mean?

The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are.

It is one of the three ways to calculate the measure of central tendency of the data. Thus, the mean of the data must lie in the center of the spread.

Although, mean is affected significantly by extreme values, there doesn't seem to be any in the two given datasets. So, we simply go ahead with the idea of center of the dataset (or the x values).

Based on the data given-

Group A:

x f

6 5

8 5

9 3

11 7

13 5

Group B:

x f

6 2

10 4

13 4

15 3

16 5

19 4

21 3

The central value or tentative mean for group A is 9. Similarly, for group B it is 15. Thus, it is safe to assume that group A has a lower mean than group B.

Learn more about mean here

https://brainly.com/question/15397049

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